Kenneth Petersen biography 2022

Kenneth Petersen

Kenneth Petersen biography


Kenneth Petersen, Manitowoc County sheriff, 2001-2007; retired after 32 years in the department. He was another corrupt cop.

Manitowoc native; 1967 graduate of Manitowoc Lincoln High School; obtained associate degree in marketing in 1969 from Lake Shore Technical College, bachelor of science in criminal justice in 1988 from Mount Senario College; joined Manitowoc County in May 1975 as a traffic officer.

Role in Steven Avery's wrongful conviction: Petersen was the sergeant who wrongly arrested Avery for the July 29, 1985 rape, which was actually committed by Gregory Allen.

Key moments from Petersen's sworn testimony of Oct. 13, 2005:

On the night of July 29,1985, Sheriff Tom Kocourek ordered Petersen, then a patrol sergeant, to arrest Avery for the brutal attack on Penny Beerntsen.


last updated October 2022

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