Routine house cleaning, maintenance, cleaning an old shelf in the basement that had been there forever, I looked up and it had a false top, a top that no one's ever noticed. I saw the old motor sitting up there in the rafters," Thomas explained.

Thomas says he was quite surprised, and has no idea where the World War II-era explosive came from.

"Obviously curious, cautious, concerned, and so I thought about it for a little bit and looked at it," Thomas said.

Thomas comes from a military background, so he says he felt comfortable enough transporting it to the police department. That's when the authorities took over.

"Our officers were sent in to assess the situation, they looked at it and determined that it was a military ordinance appeared to be a rocket propelled grenade," said Steven Klein, assistant chief of the Fond du Lac Police Department.

More at source: ABC

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