Anthony Giancola is in jail on 2 first - degree murder charges , with more charges possible . Witnesses say he stabbed 4 people at a group home for the hearing impaired , a sheriff says . After talking with witnesses , authorities identified the suspect as the 45-year-old Giancola . The suspect is accused of assaulting two others , and hitting two more with a vehicle . Authorities caught Anthony , then a principal , buying crack cocaine in his office in Philadelphia .
Anthony Giancola is in jail on 2 first - degree murder charges , with more charges possible . Witnesses say he stabbed 4 people at a group home for the hearing impaired , a sheriff says . The suspect is accused of assaulting two others , and hitting two more with a vehicle . Authorities caught Anthony , then a principal , buying crack cocaine in his office in Philadelphia .