A Michigan police officer was fired Thursday following an investigation into Ku Klux Klan and Confederate memorabilia found at his home.

Muskegon Police Officer Charles Anderson was terminated. He's previously been suspended last month while an investigation took place, according to Michigan Live.

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Anderson’s firing comes after Rob Mathis, who is black, said he saw several Confederate flags and a framed, unsigned KKK application in Anderson’s home during a real estate tour of the house.

Mathis detailed the contents of Anderson’s home in a Facebook post.

Muskegon City Manager Frank Peterson said the findings of the probe led the city to fire Anderson after a disciplinary hearing Thursday.

The investigation was intended to find out if Anderson, who is white, violated any city policies, the news outlet notes.

Muskegon Police Chief Jeffrey Lewis said the investigation did not turn up a “smoking gun,” but declined to elaborate further.

“Some questions arose that we’d like to have further answered," Lewis told commissioners on Aug. 27, according to Michigan Live.

“But I can tell you this, after reviewing this — and it was a quite lengthy investigation — what you saw on social media pretty much stands the way it is,” he said. “There was no smoking gun revealed to us or anything that shocked us.”

Anderson was a more than 20-year veteran of the local police force. He was cleared of any wrongdoing in the fatal shooting of a black man in 2009.

Muskegon County Prosecutor D.J. Hilson previously told the local news outlet that he would await the results of the police department’s investigation before he decides whether or not to reevaluate the 2009 shooting.