Weather Forecast


Video: Police say 16-year-old assailant used two knives In Pennsylvania school attack

Emergency vehicles are seen in a parking lot outside Franklin Regional High School after reports of stabbing injuries in Murrysville, Pennsylvania April 9, 2014. Twenty students were injured after a stabbing attack, apparently by a male student, at a Pennsylvania high school on Wednesday, and four of the victims were flown to area hospitals, officials said. REUTERS/WPXI/Handout via Reuters

 MURRYSVILLE, Pennsylvania (Reuters) - The 16-year-old boy suspected of stabbing 20 people at his suburban Pittsburgh high school on Monday used two knives in the attack, Murrysville, Pennsylvania, police chief Thomas Seefeld told reporters.

Video link: Stabbing suspect transported from school

Seefeld noted that a student or staff member at the school pulled the fire alarm when the attack began.

"The fire alarm being pulled probably assisted with evacuating the school," Seefeld said.

(Reporting by Elizabeth Daley; Writing by Scott Malone)