An Tso Sun, 18, was arrested March 27 after allegedly threatening to kill students at his Prendergast Catholic High School.

A Taiwanese barter apprentice accused of aggressive to “shoot up” his Pennsylvania academy had added than 1,600 circuit of ammo in his bedchamber afore badge searched the home, authorities said.

An Tso Sun’s host mother loaded the armament and a blaster into a attache bag and buried it afterwards acquirements a apprentice appear the boyhood for authoritative the declared threat, according to Upper Darby police.

More than 660 circuit for the 9 mm pistol were begin canicule afterwards the aboriginal seek at the Lansdowne home, Badge Superintendent Michael Chitwood during a columnist appointment Monday. Additionally, the bag independent 225 circuit for a 12-gauge weapon, 295 circuit for an AR-15 and 425 circuit for an AK-47, neither of which Sun is believed to accept possessed.

“There’s no agnosticism in our apperception that he was planning something,” Chitwood told reporters.

The 18-year-old Bonner & Prendergast Catholic High Academy apprentice started affairs the ammunition, as able-bodied as locations to body the 9 mm handgun, online afterwards advancing to the U.S. in August to study.

Chitwood bidding admiration that “a kid that’s not even an American citizen” could buy an boundless bulk of ammunition.

“It’s apperception boggling,” he said.

“Based on the accumulation of everything, we accept he was traveling to shoot up the school.”

Chitwood beneath to busy on how the bag of ammo was begin or if the host ancestor would face accuse for ambuscade it.

Sun, the son of Taiwanese actors Sun Peng and Di Ying, was arrested March 27. Ying told Taiwanese anchorperson Sanlih E-Television her son was “making a joke” in a video that warned acceptance to not appear to Drexel Hill academy on May 1.

During the aboriginal seek at Sun’s home, badge begin a military-style ballistic belong and a activating crossbow with arrows in his bedroom.

Chitwood said the U.S. Department of Immigration and Customs Enforcement has issued a detainer appeal on the teen, which asks the arrestee to be handed over for accessible deportation. He was initially confined with a $100,000 bond.