Mantorville, MN (KROC AM News) - An arson investigation by the Mower County Sheriff’s Office led to the discovery of a rocket propelled grenade Sunday.

Dodge County deputies assisted Mower County investigators in the execution of a search warrant Sunday afternoon at a farm along Dodge Mower Road.

Dodge County Sheriff Scott Rose says the warrant was related to a suspected arson case in Waltham Sunday morning that was being investigated by Mower County authorities. Rose says the search was ended when officers found what appeared to be a rocket propelled grenade in the Dodge County home..

The St Paul Bomb Squad and Air Force Ordnance Disposal Unit were called to the scene and it determined the device was inert and there appeared to be no explosives in it. The mortar round was later detonated without incident.

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