An 18-year-old Florida student was arrested Monday after officials informed police he was wearing a bullet-proof vest on school property.

Shawn Keiffer Newberry, 18, of Lakeland, Fla., is facing charges of armed trespassing, grand theft and criminal mischief after police found the student had purchased body armor, a Taser, AK-47s, a shotgun, gas mask and ammunition among other items, officials said.

A search warrant executed on the student's home found a video showing Newberry and four others using the AK-47s for target practice.

Officials notified police Monday that Newberry was wearing a bullet-proof vest at the Life Skills Center in Lakeland. Newberry, officials said, was evasive when asked about the vest and a search of his vehicle turned up "Clear Out," a chemical agent used to temporarily incapacitate a person.