(CBS) – The discovery of grenades at a Northwest Indiana gunsmith shop caused a scare Tuesday afternoon.

Around 3 p.m., a person left the explosives at Gutridge, Inc. in Griffith, Ind., police said in a news release.

Authorities were trying to figure out how to safely get rid of the devices, which were identified as World War II-era grenades.

Neighboring businesses were evacuated as a precaution, police said. The ATF consulted with local authorities. The grenades were removed from the building and safely detonated.

Anyone with information should call Griffith Police at 219-924-7503, extension 252.  Parties that wish to remain anonymous may call the department’s tip line at (219) 922-3085.

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