An 18-year-old Taiwanese exchange student pleaded guilty to threatening to shoot up his Delaware County Catholic high school.

On Monday, An-Tso Sun pleaded guilty to terrorstic threats with intent to terrorize another. A possession of instrument of crime with intent charge was dismissed.

Sun was sentenced to 4 to 23 months in the George W. Hill Correctional Facility and will be paroled to the ICE detainer. He was also ordered to pay $700 in restitution.

Sun was arrested in March after police said he threatened to carry out a shooting on May 1 at Bonner and Prendergast Catholic High School in Drexel Hill.

Police say he built his own 9 mm handgun using parts he bought online and purchased 1,600 rounds of ammunition for a variety of firearms. The weaponry was discovered packed inside a duffel bag.

"When we add it all up, there is no doubt in our minds that he was planning something," Upper Darby Police Superintendent Michael Chitwood said.

About 663 rounds of 9 mm ammo, 425 rounds of AK-47 ammo, 295 rounds of AR-15 ammo, 225 rounds of 12-gauge ammo, and the hand-assembled gun were recovered in the bag, Chitwood said.

Sun's host mother in Lansdowne, Pennsylvania removed the armaments from the teen's bedroom after the school contacted her about the alleged threat, Chitwood said.

The ammo and gun parts were bought over the internet since Sun arrived to the United States in August, Chitwood said. He went online on a school-issued iPad at least 20 times to search about guns or to buy ammo and gun parts.

That internet research included visits to websites about AR-15 and AK-47 assault-style rifles — which have been used in a string of mass shootings — and Chitwood believes it shows Sun was attempting to purchase the weapons.

During a search of Sun's bedroom, police recovered other items including a military-style ballistic vest, military-style web gear with pouches to hold ammo clips, a crossbow with scope and seven arrows, a loading dock for rifle clips, 9-mm ammunition and a strangling device, police said.

During the course of the investigation, Chitwood said police found the duffel bag.

Sun, who is in the U.S. on a student visa, legally obtained all of the weaponry, Chitwood said.

Sun's family and and a former tutor said the teen long had an interest in weapons and protecting others from harm. He also once built a flamethrower.

His now former attorney, Enrique Latoison, previously said the teen never intended to carry out a shooting. He said Sun lacked "the same social skills of what it is to grow up in the post-Columbine generation" in not understanding the magnitude of his comment to a classmate.

What's even better than hitting a home run in a Little League game?

Hitting it on the day the Phillie Phanatic happens to be visiting -- and celebrating success with the big green guy!

The Phanatic was visiting the West Cumberland Little League homecoming game in Hopewell, New Jersey this weekend.

It was the last game of an undefeated season for the Riggins Nursery team, so the stakes were high and energy was electric as little league player Cole Samuels stepped up to bat, just moments after his teammate hit a home run.

Samuels, wearing the number 74 on his jersey in remembrance of his grandfather, responded with another home run. As he rounded the bases enroute to home plate, the Phanatic jumped out of the dugout with the rest of the team to celebrate.

The Phanatic loves a home run. Maybe one day he'll be celebrating another great hit from Samuels -- perhaps in a bigger stadium in south Philly?

Congenital heart defects are the most common heart defects, affecting about 1 in 100 births. And even after successful surgery, people who have these heart defects need to stay in special medical care as adults. Sunday, the 2018 Greater Philadelphia Congenital Heart Walk will step off to raise awareness and money for research of the condition. NBC10 News' Erin Coleman speaks with Mark Roeder, president of the Adult Congenital Heart Association.

Students in Delaware County received a different type of graduation gift. Bulletproof backpacks that could save their life during an emergency.

Thinking of buying a house in Philadelphia? Philly Real Estate Week is underway, with free events to help you find your next house to live in or to invest in. Nicole Purvy of Philly Real Estate Week tells NBC10's Erin Coleman how to make the most of it.

Tuesday marks the five year anniversary of the collapse at a Salvation Army store in Philadelphia that killed six people. The most seriously injured survivor, a woman who was buried alive, is urging us all to never forget what happened.

Third party booking sites are popular for finding hotel, airfare and rental car deals. But sometimes your plans fall through. One NBC10 viewer called NBC10 Responds when her reservation got her nowhere.

Two homeless camps in Philadelphia were closed last week. But now neighbors say instead of fixing the problem, the city simply moved it to their street with more drug users spotted in their area.

A teen girl who was learning how to drive struck and killed two men in a parking lot in the Port Richmond section of Philadelphia Monday night, police said.

The 15-year-old girl was driving a Ford Explorer with her mother in a shopping center parking lot along the 3600 block of Aramingo Avenue around 8:45 p.m., Philadelphia police said. As she was driving, the girl lost control of the vehicle and struck two men, both in their 50s, knocking them into a nearby store wall.

A 54-year-old man was pronounced dead at the scene while a 55-year-old man was taken to Hahnemann University Hospital where he was pronounced dead shortly after.

There were four people in the SUV, including the girl who is old enough to drive. There was normal traffic in the shopping center, which includes a Dollar Tree and shoe store, lot at the time, police said.

Police have not filed any charges but are investigating the incident. They have not yet revealed the identities of the two men. 

A viral video showing mice or rats running through a bag full of burger buns led to the shutdown of a Wilmington, Delaware Burger King.

The video of two rodents running over burger buns at the Burger King on Rt. 202 was posted on Facebook Thursday. The Division of Public Health Office of Food Protection (OFP) then received a complaint as well as the video the next day.

OFP inspectors responded to the Burger King for an inspection. They then ordered the Burger King to be closed immediately due to unsanitary conditions.

During the inspection, mouse droppings were found inside hamburger and chicken sandwich rolls, on the floor, near the water heater, near soda boxes and behind fryers. The inspector also found plastic that appeared to be chewed through by mice, a leaking ceiling in the kitchen and flies.

The Delaware Department of Health and Social Services sent a Cease and Desist letter and required a re-inspection for the Burger King to reopen.

A spokesperson with the Delaware Department of Health and Social Services did not confirm whether the Burger King reopened. The restaurant appeared to be open Monday night when SkyForce10 was over the scene however.

Real estate is currently a seller’s market. If you’re looking to buy a home, you can get the best bang for your buck in Germantown, West Philadelphia or parts of Mount Airy. Nicole Purvy, a real estate investor talks about Philly Real Estate Week.

NBC10 First Alert Traffic reporter Jessica Boyington is keeping an eye on a dump truck that overturned on Route 1 near Route 273 in Christiana, Delaware.

Dr. Shelly LaPrince and Elijah LaPrince are a couple who struggled with infertility for more than a decade. They wrote 'A Mother's Desire, a Father's Prayer, God's Promise' about their experience in hopes of helping others struggling with the issue. The couple joined us in studio to talk about their own journey.

Voters head to the polls Tuesday for a New Jersey primary election that's getting more attention than usual.

Democrats feel there is a realistic opportunity to pick up one or two Congressional seats currently occupied by Republicans, while Republicans are focused on remaining competitive in districts that they already control. Read more about the state races here.

Here's what you need to know to vote. For more information on the candidates in the race, click here.

Where and when do I vote?

Voters can find their polling place using this locator. Polls across the state are open Tuesday at 6 a.m. and close at 8 p.m. 

Can I vote if I am not registered in a political party?

New Jersey functions with a closed primary system, which means voters can only vote if they are registered with a party. If a voter remains unaffiliated until primary day, they can go to their polling place and vote -- but the party of the primary they vote in will become their affiliated party. This can be changed again before the general election in November. 

Do I need identification to vote?

If you did not provide information upon registering to vote or if the identification information cannot be verified, you may be asked to show identification at the polling place.

Valid Identification includes:

NJ driver's license

Military or other government ID

Student or job ID

Store membership card

United States passport

Or

Bank statement

Car registration

Government check or document

Non-photo New Jersey driver's license

Rent receipt

Sample ballot

Utility bill

Any other official document

Stay with NBC10 for live updating election results after the polls close.

Crews battled an overnight house fire on Hartville Street in Philadelphia's Kensington neighborhood. Four family members got out safe and Red Paw Relief Team rescued two dogs from the home and are still looking for the family's cat.

The commute for thousands of NJ Transit train riders will face a dramatic change in rail schedules that includes temporarily discontinuing trains or changes in origin and destination stations.

In order to accommodate the Advance Positive Train Control equipment installation to its rail fleet, NJ Transit announced that weekday rail schedules will be adjusted to allow for the necessary components to be installed on trains.

Beginning Monday, certain trains will be temporarily discontinued or have changes of origin or destination that will impact Northeast Corridor, North Jersey Coast, Morris & Essex and Pascack Valley lines. Additional trains will also have schedule or station stop changes.

NJ Transit says the schedule adjustments are temporary and will be back to normal in early 2019.

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The PTC system that will be installed can automatically stop trains and prevent collisions. The measure comes after a number of collisions occurred within the past couple years, including one in Hoboken that left one woman dead.

“NJ TRANSIT understands that any change to the train schedule has an impact on the travel patterns of our customers. We are doing everything in our power to install this important safety technology as quickly as possible. I ask for customers’ patience during this process as the end result is a safer railroad for everyone,” Executive Director Kevin Corbett said in a statement.

The trains that will be temporarily discontinued or have a change in origin are:

Northeast Corridor (NEC)

Inbound

Train 5822, the 7:05 a.m. departure from New Brunswick to Newark Penn

• Earlier option departs at 6:59 a.m. (Limited additional capacity)
• Later option departs at 7:10 a.m.

Outbound

Train 3811, the 4:51 a.m. departure from New York Penn Station to Trenton

• Earlier option departs at 4:17 a.m.
• Later option departs at 5:07 a.m.

Train 5869, the 6:03 p.m. departure from Newark Penn to Trenton

• Earlier option departs at 5:56 p.m. (Limited additional capacity)
• Later option departs at 6:11 p.m.

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North Jersey Coast Line (NJCL)

Inbound

Customers may take alternate service to Secaucus and transfer to service to Hoboken at no extra charge

Train 2300, the 4:49 a.m. departure from Bay Head to Hoboken

• No earlier option between Bay Head and Long Branch. Earlier option departs Long Branch at 4:58 a.m. (Train 2300 departed Long Branch at 5:27am)
• Later option departs Bay Head at 4:57 a.m.

Train 2602, the 6:05 a.m. departure from Long Branch to Hoboken

• Earlier option departs at 6:01 a.m.
• Later option departs at 6:19 a.m.

Train 2312, the 2:05 p.m. departure from Bay Head to Hoboken

• Earlier option departs at 1:10 p.m.
• Later option departs at 3:05 p.m.

Train 3274, the 6:55 p.m. departure from Long Branch to New York Penn Station

• Earlier option departs at 6:33 p.m.
• Later option departs at 7:20 p.m.

Outbound

Customers may take alternate service to Secaucus and transfer to service to Long Branch or Bay Head lines at no extra charge.

Train 2303, the 2:12 p.m. departure from Hoboken to Bay Head

• Earlier option departs at 2:02 p.m. from Newark Penn (From Newark Penn - 2303 departed Newark at 2:36 p.m.)
• Later option departs at 3:05 p.m. (From Newark Penn)

Train 2607, the 4:55 p.m. departure from Hoboken to Long Branch

• Earlier option departs at 4:54 p.m. from Newark Penn (From Newark Penn – 2607 departed Newark at 5:18 p.m.)
• Later option departs at 5:25 p.m. from Newark Penn

Train 2313, the 6:21 p.m. departure from Hoboken to Bay Head

• Earlier option departs at 6:22 p.m. from Newark Penn (From Newark Penn – 2313 departed Newark at 6:40 p.m.)
• Later option departs at 6:47 p.m. from Newark Penn

The following trains will be restored to and from New York Penn Station and will no longer operate to and from Hoboken. The trains were diverted to Hoboken in January as part of Amtrak track work at New York Penn Station.

• Train 3318 will depart Bay Head at 5:40 a.m. and arrive at New York Penn Station at 7:42 a.m.
• Train 3269 will depart from New York Penn Station at 5:45 p.m. and arrive in Long Branch at 7:24 p.m. 

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Morris & Essex Lines (M&E)

Major highlights for the M&E Lines include:

Inbound - Change in Origin Stations

Train 608, the 5:45 a.m. departure from Dover to Hoboken has service eliminated from Dover to Chatham. Train originates in Summit.

• Earlier option departs at 5:33 a.m. (Requires transfer at Newark Broad for Hoboken)
• Later option departs at 5:54 a.m. (Requires transfer at Newark Broad for Hoboken)

Train 626, the 8:28 a.m. departure from Dover to Hoboken has service eliminated from Dover to Morris Plains. Train originates in in Morristown.

• Earlier option departs at 8:08 a.m. (Requires transfer at Summit for Hoboken)
• Later option departs at 9:06 a.m. (Requires transfer at Newark Broad for Hoboken)

Outbound - Temporarily Discontinued

Train 609, the 6:42 a.m. departure from Hoboken to Dover

• Earlier option departs at 6:15 a.m.
• Later option departs at 6:55 a.m. (Requires transfer at Summit for Dover)

Train 645, the 5:08 p.m. departure from Hoboken to Dover

• Earlier option departs at 4:42 p.m.
• Later option departs at 5:12 p.m. (Requires transfer at Newark Broad for Dover)

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Pascack Valley Line

Inbound

Train 1618, the 7:59 a.m. departure from Spring Valley to Hoboken. (Metro-North express)

• Earlier option departs Spring Valley at 7:37 a.m.
• #1620 moves 5 minutes earlier to depart Spring Valley 4 minutes later than the discontinued #1618. Metro-North customers arrive in Hoboken 13 minutes later than the current #1618

Outbound

Train 1639, the 7:20 p.m. departure (Monday through Thursday) from Hoboken to Spring Valley (Metro-North express)

• Earlier option departs at 6:48 p.m.
• Later option departs at 7:29 p.m.

Train 9653 which currently operates only on Friday afternoons and before specific holidays (departing Hoboken at 2:58 p.m.) will operate only on July 3, Aug. 31, Nov. 21 and Dec. 21. On those dates, train 1633 (departing Hoboken at 5:58 p.m.) will not operate.

For more information, visit njtransit.com.

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The jury selection is set to begin Tuesday for the surviving suspects in a robbery that led to the shooting of an Atlantic City police officer. Officer Josh Vadell is still recovering from a head wound and skull reconstruction surgery as a result of the shooting.

Five years after a building being demolished collapsed onto a Center City Philadelphia thrift store, killing six and injuring 13 others, victims' families and city officials paused Tuesday to dedicate a memorial park at the site.

Mayor Jim Kenney and other helped to dedicate the June 5th Memorial Park at 22nd and Market streets. 

Anne Bryan, Roseline Conteh, Bobor Davis, Kimberly Finnegan, Juanita Harmon and Mary Simpson died when a building being demolished next door collapsed onto the open Salvation Army store on June 5, 2013.

Artist Barbara Fox, a graduate of the University of Pennsylvania and the Pennsylvania Academy of the Fine Arts, designed the memorial. The park, which was designed by a team of volunteers and professionals, includes stone benches, trees and ornamental grasses.

Three tall granite stones with two windows in each — one to represent each of the victims — make up the memorial. The victims' names are etched into the granite.

"This memorial park will provide a contemplative respite for visitors while preserving the memory of those lost - and serve as a constant reminder that construction projects must be done safely," the website for the memorial says.

The Salvation Army donated the land to the city and private donors and the city contributed the rest of the $1.3 million cost.

A contractor and subcontractor are serving years behind bars for their roles in the deadly collapse. Contractor Griffin Campbell recently reiterated that he maintains his innocence.

A woman threatened to kill officers after she arrived at a Montgomery County police station to say that she had just killed her grandmother, investigators say.

Nicole Cadwalader, 30, faces first-degree murder charges in the stabbing and beating death of her grandmother Sharon Burke in Ambler.

After stabbing Burke multiple times in the neck with a kitchen knife and beating the 68-year-old with a pan and baseball bat, Cadwalader went to a friend's house before walking to the Ambler police station around 6 a.m. Monday, Montgomery County District Attorney Kevin Steele said in a news release.

Officers met Cadwalader outside the police station, Ambler police said in an affidavit of probable cause. She then became argumentative and allegedly told officers she would kill them just like she killed her grandmother.

When an officer arrived to Burke's South Chestnut Street they found the front door unlocked, investigators said.

Once inside, the officer found Burke's body on the bedroom floor, police said. He also found a bloody steak knife on the kitchen counter and a bloody baseball bat near the front door.

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While being interviewed, Cadwalader told police she slit Burke's throat because she believed her grandmother to be a "wretched, evil woman," police said. Cadwalader said she tried to "cut her windpipe" then hit Burke over the head several times with the pan and bat.

The attack took place in the kitchen and Burke was able to drag herself to the bedroom where she died, police said. She had defensive wounds on her hands.

Cadwalader also faces a charge of resisting arrest. She kicked a Whitpain Township police officer assisting in the arrest in the shin, police said.

Cadwalader was arraigned Sunday evening and held without bail at county jail, according to court records. It wasn't clear if she had an attorney who could comment on her behalf.

Using President Donald Trump's preferred communication method, Eagles star safety and political activist Malcolm Jenkins vowed via Twitter to continue fighting for "the truth" despite White House snub.

On Tuesday, less than 24 hours after Trump disinvited the Super Bowl champions to D.C., Jenkins accused the White House of lying to "paint the picture that these players are anti-American, anti-flag and anti-military."

"It's hard to step out in the public and fight to make it better," Jenkins tweeted. "It takes courage to stand up for the truth even if it's not a popular one."

Jenkins' tweeted minutes after the White House issued its own statement doubling down on Trump's decision and accusing the Super Bowl champions of abandoning their fans by offering to send only a small delegation to D.C.

The White House said it was the team’s “lack of good faith” that prompted Trump to cancel the celebration.

“Unfortunately, the Eagles offered to send only a tiny handful of representatives, while making clear that the great majority of players would not attend the event, despite planning to be in D.C. today," White House Press Secretary Sarah Huckabee Sanders said in the statement.

"In other words, the vast majority of the Eagles team decided to abandon their fans."

Trump initially claimed his decision was rooted in the ongoing debate over whether NFL players must stand for the national anthem. That question became increasingly controversial after San Francisco 49ers quarterback Colin Kaepernick began silently kneeling on the sidelines at the beginning of games.

Kaepernick's protest was intended to raise awareness around racism and, specifically, the killing of black men by police. But his on-field activism sparked criticism from both the NFL and football fans who claimed that politics and sports shouldn't mix. 

Things started to fall apart for the Eagles Friday when the Eagles reneged on their initial promise to send a group of 81 people to the White House, Sanders said.

However, the Eagles asked to reschedule their visit because only a small handful of players could attend. The president, instead, canceled the celebration on Monday less than 24 hours before festivities were set to take place.

Trump's suprising decision was announced late Monday evening in a short statement painting the team — whose mascot is also the United States' national symbol — as unpatriotic.

"[The Eagles] disagree with their President because he insists that they proudly stand for the National Anthem, hand on heart, in honor of the great men and women of our military and the people of our country," Trump said in a statement released Monday evening. "The Eagles wanted to send a smaller delegation, but the 1,000 fans planning to attend the event deserve better."

In lieu of a visit with the team, the White House staged a “Celebration of America” featuring music provided by U.S. military bands and choruses. Hundreds of Eagles fans were expected to attend, but NBC10 reporter Tim Furlong counted only one Philadelphia jersey in the crowd. 

This isn't the first time Trump has disinvited a professional sports team after its players hedged on visiting the White House. Last year, when the Golden State Warriors won the NBA finals, Trump singled out Stephen Curry in a tweet:

"Going to the White House is considered a great honor for a championship team. Stephen Curry is hesitating, therefore invitation is withdrawn!"

Perhaps anticipating yet another showdown as the 2018 NBA finals near, Cleveland Cavaliers star LeBron James said Trump's Eagles backlash is "typical" of this president. 

"I know no matter who wins this series ... it won't be Golden State or Cleveland going" to the White House, he said. "Let's not let someone uninviting you to their house take away from that [championship] moment." 

Meanwhile, a spokesman for the Villanova men's basketball team, which won the 2018 NCAA championship, told NBC10 they have not received an invitation from Trump to visit the White House. 

"Beyond that, we aren’t going to speculate on what the decision would be if one is forthcoming," Mike Sheridan said.

Reactions to the president’s decision were mixed in Philadelphia, which continues to revel in the city’s historic Super Bowl victory. Mayor Jim Kenney told NBC10 that the Eagles remain world champions “regardless of where they’re going today.”

“I'm very proud of our team. I'm very proud of the Eagles organization for their involvement in the community,” he said.

"I'm really glad that the president disinvited them as opposed to some people going and some people not going because, this way, that doesn't leak into the locker room next season and there's not any disunity. They're a team together. They're the underdogs forever. And I'm proud of all of them."

Several local leaders, including Sen. Pat Toomey and Sen. Bob Casey, also canceled their visits to the White House Tuesday. Only U.S. Rep. Lou Barletta, a Republican who is hoping to unseat Casey in November, planned to attend the “Celebration of America.”