Via Philly.com:
Philadelphia police, the FBI, and the city’s Human Relations Commission launched investigations Monday after a worker at a North Philadelphia mosque found a severed pig’s head outside its door.
Surveillance video outside the Al Aqsa Islamic Society, on Germantown Avenue near Jefferson Street, showed a red pickup truck drove past the building twice just before 11 p.m. Sunday.
The first time it crept along slowly near the curb. On its second pass, the video shows, someone extended an arm from the passenger window and tossed something that rolled to a stop near the mosque’s front door.