John Mayer might have to forfeit some of his hard-earned fortune.

After unwittingly accepting Ponzi scheme-earned cash as payment for a performance in 2008, TMZ reports the crooner is one of many folks being sued in an effort to recover the lost funds for duped investors.

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Seattle-based investment banker Darren Berg was recently sentenced to 18 years in prison for taking advantage of clients, to the tune of $100 million. Mayer was hired by booking agency Grabow & Associates for the concert in question -- via the agency, Mayer was reportedly paid using nearly $465,000 of Berg's illegally-obtained funds.

Now, the musician, 34, is being targeted by those tasked with recovering, and repaying, the money Berg owes his investors.

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"John Mayer performed at a corporate event in 2008 and was paid for his services," Mayer's lawyer told TMZ in a statement Sunday. "The opportunity was brought to John through his talent agency, CAA."

Though no official decisions have been made, a judge may end up ruling that Mayer needs to give back the equivalent of what he was paid for his show four years ago.

This article originally appeared on John Mayer Sued for 2008 Ponzi Scheme Paycheck