(CNN) -- The police beating of a California homeless man has spawned a civil lawsuit in which a bar doorman claims he was fired after he cooperated with investigators and claimed his manager made a false report to police about the homeless man's activities. Michael Reeves, who also worked as a security guard, is suing his former employer, the Slidebar Rock-N-Roll Kitchen in Fullerton, California, for more than $4 million, according to the lawsuit. Eric Dubin, attorney for Slidebar and its owner Jeremy Popoff, said Reeves' claims are "completely false and fabricated." Reeves "was simply fired for getting confrontational with a manager after he let girls in a side door," Dubin said in an e-mail to CNN. "He never mentioned any of these alleged claims to (the) DA when interviewed, during his sworn employment hearings for unemployment, nor in his signed termination papers last year."
@highlight
NEW: Lawsuit is "bogus" and "completely false and fabricated," defense attorney says
@highlight
Michael Reeves is a doorman at Slidebar Rock-N-Rock Kitchen in Fullerton, California
@highlight
He alleges his manager made a false report about a homeless man "breaking into cars"
@highlight
Kelly Thomas, the homeless man, was just picking up cigarette butts in a parking lot, Reeves claims
I complained about that false report that night to my manager and continued to complain about the false report until the date I was terminated, on September 23, 2011," said @placeholder, who was hired in March 2010.