IOWA COUNTY, Wis. – The Iowa County District Attorney was arrested for operating while intoxicated, officials said.

Officials made contact with Iowa County District Attorney Larry E. Nelson who they determined was driving while impaired. The OnStar alert had came after he accidentally pushed the button in his 2017 Mercedes Benz, according to a news release from the Grant County Sheriff’s Office.

Officials decided the investigation into Nelson was a conflict of interest and requested the Grant County’s Sheriff’s Office to get involved.

Nelson was arrested by Grant County deputies for first offense operating while intoxicated, according to the release. He was transported for further testing and later released.

The Grant County Sheriff’s Office is conducting the investigation.