A Michigan police officer has been placed on administrative leave after Ku Klux Klan memorabilia was reportedly found in his home. A black man said he discovered the memorabilia while touring Charles Anderson’s house, which is up for sale. The prospective buyer, Rob Mathis, posted a photo on Facebook of a framed “application for citizenship” to the Ku Klux Klan he said he found in a bedroom of the home, and said he saw Confederate flags in the house and garage, Michigan Live reports. “I thought, let me get the hell out of here right now—this is a Klan house,” Mathis said. “I just felt so gross after being in that house, like I needed to be dipped in hand sanitizer,” he said. Anderson is on leave pending an investigation into the memorabilia, Muskegon City Manager Frank Peterson told Michigan Live. Anderson told the news outlet he could not comment on the matter because it is “under internal investigation.” Anderson, who has been on the force for over 20 years, was reportedly cleared of wrongdoing in the fatal shooting of a black man in 2009.