We now know what that mysterious 'boom' in west Michigan was

Aerial view of Grand Rapids, Mich.

There is an explanation for the loud "boom" heard and felt this past weekend in west Michigan. 

A bachelor party was firing shots at explosive material, creating a loud, reverberating sound reported by hundreds of people Saturday night in the greater Grand Rapids area, WOOD TV reports

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From WOOD TV:

The Kent County Sheriff’s Department confirmed the source of the sound Thursday. Deputies said they talked to the people responsible for the boom, which happened when they fired shots at explosive material.

A tip led authorities to the area of 68th Street SW and Wilson Avenue in Byron Township. The tipster told deputies the party members were shooting the explosive material Tannerite, but detectives have not confirmed the type of explosive material used.

Deputies said they are not seeking charges in the case. They said the group followed the law when it came to handling and transporting the materials used.

So there it is. We now have closure to this mystery. It wasn't aliens, it wasn't the Russians and it wasn't North Korea. 

The best news: No one was hurt. 

Also, it wasn't P.O.D. 

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