Investigations On Pennsylvania School Stabbing Ongoing
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Alex Hribal, the attacker of the high school stabbing in Pennsylvania, is charged as an adult and faces four counts of attempted homicide and 21 counts of aggravated assault related to the 21 people he wounded. 
Keith Srakocic/AP
According to the emergency coordinator Stevens, the wounded students are in age from 14 to 17. Four victims were in critical condition Wednesday, and one may not survive, Westmoreland County District Attorney John Peck said.
The police and FBI still look into possibilities that cause the accident.
Read more at CNN.
Reach Staff Writter Jianyu Zhao here.
