A live grenade was discovered Friday in a building across the street from Manhattan College.
The device was found in the hallway of a building on Waldo Avenue near West 238th Street in Kingsbridge around 3 p.m. Friday.
The building is used by some students as off-campus housing, but the school is off now for winter break.
The grenade was removed and taken to Rodman's Neck.
The FBI said it is a low-grade explosive and said there's no connection to terrorism.