A Michigan police officer was put on administrative leave after Ku Klux Klan memorabilia and Confederate flags were reportedly found in his home.

Rob Mathis, who is black, was touring officer Charles Anderson’s house, which is for sale, Michigan Live reported.

During the tour, Mathis said he and his wife saw Confederate flags in Anderson’s house and garage, as well as a framed “application for citizenship” of the Ku Klux Klan on the wall, according to a Facebook post.

“Today we were looking at a house in Holton that we both agreed would be perfect,” Mathis wrote in the Aug. 7 post. At first, he joked that he was “walking to the imperial Wizard of the Ku Klux Klan’s house,” but after seeing the flags and the framed KKK memorabilia, he “immediately stopped” the tour.

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“I feel sick to my stomach knowing that I walk into the home of one of the most racist people in Muskegon hiding behind his uniform and possibly harassing people of color and different nationalities,” the post continued. “To the officer, I know who you are … pictures speak 1,000 words.”

Anderson, who is white, was suspended from the force as the city investigates the allegation, Michigan Live reports.

He has served on the Muskegon police force for more than 20 years, City Manager Frank Peterson told Michigan Live.

Anderson was cleared of any wrongdoing in the fatal shooting of a black man in 2009.

After a traffic stop, Anderson chased 23-year-old Julius Johnson and shot him. Anderson was severely beaten in the head and said he feared for his life, Michigan Live reports.