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CBS News, Facebook, Minneapolis PD

The man who claimed George Floyd and former police officer Derek Chauvin "bumped heads" at a nightclub now says he mixed up Floyd with someone else.

David Pinney, who claimed he worked "closely" with Floyd and Derek Chauvin -- and previously told CBS News the two men "bumped heads" -- changed his story Wednesday.

Pinney told CBS News he worked at the same nightclub in south Minneapolis with Floyd for 5 months in late 2015 and early 2016.

He described tension between the two men -- and he said he often stepped in to break up fights between them.

He initially described a close bond with Floyd. "It's a difference when you work side by side with somebody. Like, I see him like a brother...."

"I knew George on a work basis," he said. "We were pretty close. When it came to our security positions, he was in charge and I worked directly below him as a security adviser."

He said Chauvin was "extremely aggressive within the club."

"…..he always showed aggression to, you know, George. So George, to keep it professional, George had me intervene and – interface with him instead of himself, just to be – just to get away from the conflict and keep it professional."

Pinney told CBS News he and Floyd were "very close" and he viewed him as a brother.

On Wednesday, Pinney told CBS News in an email he had confused Floyd with someone else: "There has been a mix up between George and another fellow co-worker," he wrote.

"I apologize for not doing my due diligence and placing you in a very uncomfortable situation," Pinney told CBS4's Jeff Pegues.

A lawyer representing the Floyd family called for Chauvin to be charged with first-degree murder because he believes Chauvin knew who Floyd was and what happened on May 25 was personal.