MURRYSVILLE (KDKA) – Investigators have released more details into why a Franklin Regional High School student allegedly went on a stabbing spree earlier this month. According to court documents, Vice Principal Samuel King, overheard 16-year-old Alex Hribal say, “No, I am not dropping them [the knives], my work is not done. I have more people to kill,” after he was detained by a school security guard. This new information has led police to upgrade Hribal’s charges. He is now facing 21 counts of attempted criminal homicide, in addition to charges of aggravated assault and bringing a weapon on school property....