Three Wisconsin men charged with homicide after homemade cannon accidentally kills friend

Mail Online | 5/19/2020 | Miranda Aldersley For
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Three Wisconsin men are charged after a homemade 'cannon' exploded and killed their friend at a reunion party.

The trio are charged in Marion, Waupaca County with homicide by negligent handling of explosives, a felony.

June - Kenneth - Niemer - Hearing - Plea

On June 11, 42-year-old Kenneth Niemer waived a preliminary hearing and entered a not guilty plea, WLUK reported.

The trial date has not yet been scheduled, court records show.

Men - Father - Son - Scott - Mattes

The other two men, father and son Scott Mattes, 60, and Robert Mattes, 37, have not yet entered their pleas.

WLUK-TV reports that they were using a four-foot-long, half-inch-thick steel pipe with a plug welded onto the bottom at Scott Mattes' home in Marion.

Complaint - Attempt - Device - Try - Piece

According to the complaint, after the first attempt to ignite the device failed, it exploded during the second try, sending a piece of shrapnel that killed 44-year-old Paul Casperson of Illinois on the evening of May 26.

Casperson died of a 'penetrating fragment wound of abdomen' and the steel piece of shrapnel was removed during the autopsy, the complaint says.

Suspects - Court - Afternoon - Wednesday - May

All three suspects appeared in court on the afternoon of Wednesday May 29, after which all three were released on $25,000 signature bonds.

Veronica Isherwood, Waupaca County District Attorney, said the group of friends were having a reunion party and they decided to entertain themselves by setting off explosives.

'These - People - Record

'These are all people that have no criminal record and they all have...
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