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Dubuque man injures woman before killing himself in Grant County, Wisconsin shooting

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POTOSI, Wisconsin (KWWL) -- A Dubuque man shot and injured a woman in Grant County, Wisconsin last week, before killing himself, authorities say. 

In the early morning of November 19, the Grant County Sheriff's Office responded to an area in Potosi, Wisc. to investigate a possible argument.

The Sheriff's Office says that 47-year-old Aaron Osthoff, of Dubuque, allegedly forced his way into the residence of 37-year-old Megan Breuer. Osthoff then shot Breuer in the neck and head area before shooting himself.

The Sheriff's Office says that Osthoff and Breuer knew each other, but the extent of their relationship has not been determined yet. 

Osthoff was declared dead at the scene. Breuer was air-lifted to UW Madison, and authorities say she is currently in stable condition.