FAIRFIELD (CBS SF) — People were evacuated from an busy shopping area in Fairfield Thursday morning following the discovery of a potentially live hand grenade, authorities said.

The grenade was found in the bushes behind a 99 Cents Only store located on the 600 block of Beck Ave. just south of W. Texas St., according to CBS 13.

The store and surrounding location were evacuated and a bomb squad was dispatch to remove the device.

Fairfield police said the grenade did appear to be an active device and investigators were trying to determine how the grenade ended up behind the store.

Evacuations were lifted by 10:35 a.m., police said.