MUSKEGON, Mich. -- Rena and Robert Mathis of Michigan were interested in buying a Muskegon police officer's house. But when they looked inside, they discovered KKK memorabilia. 

They found a plaque of a KKK application mounted on the wall as well as a confederate flag.

"Why would he leave it up knowing that his house was showing to be sold," Eric Hood said, President of the Muskegon County NAACP chapter. "We want a thorough investigation to be sure that when he goes out there and puts on that uniform and performs his duties as an officer that he's being fair and impartial."

Charles Anderson is the officer who was selling his home. He is currently on administrative leave.

Anderson has yet to comment on the investigation, but his wife says that he is not part of the KKK.