Shocked music fans were stunned to see the pair on stage together, with the woman exposing herself to the crowd. The man and woman were photographed during a Dead Kennedys gig in Solana Beach, California, as shocked music fans looked on.
But police say the pair may escape criminal charges, because exposing yourself in a public place is only an offence if other people are "offended or annoyed" by it under Californian law.
Concert goers turned out at the Belly Up Tavern on Thursday night ready to watch a sold-out performance of hardcore punk band Dead Kennedys.
But even they may not have been expecting something this hardcore as the man and woman - who fully exposed herself - lay down on the stage and engaged in a sex act. One onlooker, who was just metres away, told ABC This was something definitely different to see at a punk concert.
No complaints had been made to the local sheriff's office, the TV news channel said, but the incident could be a "violation of the business and professions code". Belly Up Tavern said in a statement: This is certainly a first for us. Get daily news updates directly to your inbox Subscribe See our privacy notice More newsletters.
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