Police responded to a thrift shop in the Kensington section of Philadelphia where two hand grenades were found.
The incident happened before 9 a.m. Saturday on the 2900 Kensington Ave. at the Village Thrift Store.
A female employee found the grenades in a plastic bag and called police.
Police say the devices turned out to be hollowed out and not live. The C-9 devices were not explosive.
There were no reports of any injuries.
The incident remains under investigation.