Oswald Mattner, 42, allegedly brandished knife
By Jason Arndt
Staff Writer
A former Twin Lakes resident with a checkered past in Kenosha County was killed in an officer-involved shooting in Wausau Saturday.
Oswald Mattner, convicted of several felonies as a Twin Lakes resident, allegedly brandished a knife when Wausau police arrived at a residence shortly after 10 p.m. April 30.
“The suspect armed himself with a knife and the officer shot the suspect,” stated in a Wausau Police Department press release.
Wausau Police were called to the residence in the 700 block of Gilbert Street to address a domestic disturbance at 9:35 p.m.
At 10:20 p.m., officers could not find Mattner in the area, requiring an extensive search.
“The suspect was located outside, but was able to make his way inside the building,” the release said. “When the officer located the male, he attempted to take him into custody.”
However, the release said an officer fatally wounded Mattner when he retrieved a knife.
Officer attempts at resuscitation were unsuccessful.
Citing Wisconsin State law, the Department of Justice-Division of Criminal Investigations is assuming the investigation, noting it was an officer-involved shooting.
Mattner, 42, had been convicted of felony Battery to Officers/Firefighters and misdemeanor bail jumping in separate cases in 2012, and most recently false imprisonment in 2015, according to online court records.
On Thursday, Wausau Police Chief Jeff Hardel said it is known how long Mattner was in the area.
Hardel referred all questions to the Department of Justice, but noted Mattner’s whereabouts could be unveiled at the conclusion of the DOJ investigation.
Phone calls to the DOJ in Madison went unanswered Thursday afternoon.
The full story will be in the May 13 print edition of the Westosha Report.