The Mason City Globe Gazette reports that Benjamin Bradley was
charged with criminal mischief, reckless use of explosives and possession of an explosive.
Charles City Police Capt. Brad Gibson says Bradley had fashioned a pipe into a rudimentary cannon, but it exploded Saturday and a part of it struck a vehicle parked nearby.
Attempts to reach Bradley by phone were unsuccessful. The online record of the case doesn't list his attorney. There was no answer Thursday morning at the office of his attorney in a recent case.
Bradley's next hearing is set for Wednesday.
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