Red Lion, Pa. ? A 14-year-old boy shot and killed his principal inside a crowded junior high cafeteria Thursday morning, then killed himself with a second gun, authorities said.

The shootings happened about 15 minutes before classes were to start at Red Lion Area Junior High School.

“Everyone ran out of the cafeteria yelling, ‘He has a gun!'” eighth-grader Danny Dulin said.

Principal Eugene Segro, 51, who was shot once in the chest, was pronounced dead at a hospital. James Sheets, 14, died at the scene from a shot to the head, Coroner Barry Bloss said.

Sheets brought three loaded handguns to school in his backpack and used at least two of them in the shootings, police said. The principal was killed with a .44-caliber weapon, while the student was believed to have been killed with a .22-caliber weapon.

Officials did not know of any school or legal problems the boy was facing, and said his parents had no reason to expect anything was wrong.

“We don’t know why, period,” Red Lion Borough Police Chief Walt Hughes said. “I think it’s safe to say that something was building inside of him that he couldn’t control.”

The guns belonged to his stepfather, Arthur Baker, police said. Sheets had used a key to remove them from a safe at his house, apparently on Thursday morning, police said.

Segro had been at the school more than a decade, a school official said.

“He tried to find the most lenient way to punish the kids. It wasn’t just a job for him. He truly loved the kids,” said Nicole Wisor, 16, a 10th-grader who had attended the school.