( CNN ) -- An X-Box and games , a silver iPod , a Nintendo Wii -- and a wooden knife holder missing two knives -- are among the items removed from the home of the Pennsylvania teenager suspected of going on a stabbing rampage at his Pennsylvania high school , according to court papers . Authorities removed those things from a home owned by the parents of suspect Alex Hribal , according to an affidavit CNN has obtained . Sixteen-year-old Hribal is alleged to have seriously injured at least 20 students and a security officer at Franklin Regional Senior High School in Murrysville , Pennsylvania , on April 9 . The teen has been arraigned as an adult . He faces four counts of attempted homicide and 21 counts of aggravated assault . Murrysville , with a population of about 20,000 , is a quiet middle-class enclave roughly 20 miles east of Pittsburgh on U.S. Route 22 . CNN 's Lorenzo Ferrigno contributed to this report .
Video games , players and knife holder among items taken from suspect 's home . Suspect Alex Hribal faces 4 counts of attempted homicide , 21 counts of aggravated assault . Hribal , a sophomore , has been arraigned as an adult .