Alex Hribal, the teen accused in the April knife attack at Franklin Regional High School in Murrysville, has waived his preliminary hearing on charges of attempted homicide and related crimes.
His defense attorney, Patrick Thomassey, filed the notice today with District Judge Charles Conway. The hearing had been scheduled for Wednesday.
The 16-year-old sophomore is charged as an adult with slashing or stabbing 20 students and a security guard in a first-floor hallway before the start of classes April 9. He remains in the Westmoreland County juvenile detention center.
His formal arraignment on 21 counts each of attempted homicide and aggravated assault, and one count of having a weapon on school property, is scheduled for July 23.
Forbes Hospital on May 17 released the final student hospitalized in the rampage.