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Mayer has been dragged into a lawsuit to recover $100 million that was stolen from investors by US investment banker Darren Berg.
Berg was sentenced to 18 years in prison earlier this year for fleecing millions of dollars from investors.
The lawsuit against Mayer alleges that he was the beneficiary of as much as $465,000 of that money which he was paid to play a corporate event hosted by Berg's company back in 2008.
The lawsuit is being brought by trustees in an attempt to recoup the money that was stolen from investors.
Mayer's lawyer is adamant that there was no wrongdoing on Mayer's part, saying in a statement to TMZ "John Mayer performed at a corporate event in 2008 and was paid for his services ... The opportunity was brought to John through his talent agency, CAA."
The lawsuit echoes other recent incidents where music stars were paid by some questionable employers. In recent years Beyonce, Nelly Furtado and Mariah Carey had all been embarrassed by revelations that they had taken million dollar payments from brutal Libyan dictator Muammar Gaddafi to perform at private parties.
This incident might have more stars checking to make sure their employers are squeaky clean before banking their money...Related Video: The latest showbiz news