Police in (the state of) Pennsylvania say a student armed with a knife injured 19 of his classmates and an adult during a 30-minute stabbing and slashing spree at a high school near Pittsburgh.
Authorities say not all the injured were cut by the knife. Some were injured during the panic that ensued at Franklin Regional High School in Murrysville, a suburb of Pittsburgh.
A hospital spokesman says four victims appear to have life-threatening injuries, but are expected to survive. Seven victims are listed in serious condition with wounds to their torso, abdomen, chest or back.
Police say a 16-year-old male suspect is in custody.