Philadelphia police officers serving warrants at two homes this morning found potential explosive devices.
Narcotics unit officers were serving a warrant at a house on the 1800 block of East Thayer Street in Harrowgate when they found what they believed to be a live grenade, said Officer Christine O'Brien, a police spokeswoman.
The department's bomb squad was called to the scene to investigate further, and determined that the device was a practice round, said Officer Tanya Little, another police spokeswoman.
Officers serving a separate narcotics warrant on the 2600 block of East Thompson Street in Port Richmond also found possible explosives.
The bomb squad removed three "incendiary" devices from the house, Little said.
She said she didn't know the nature of those devices. Scanner reporters indicated that they could be pipe bombs.
The bomb squad will dispose of the explosives.