A photo of a man performing oral sex on a woman on stage at a Dead Kennedys concert on Thursday has gone viral.
The American hardcore punk band were performing at the Belly Up Tavern venue in Solana Beach.
While the band were playing, a woman was seen laying undressed on the stage while a man appeared to be giving her oral sex.
According to local 10 ABC News, police say that no charges or official complaints had been made.
However, they added that the incident "could be a violation of the business and professions code".
Security at the concert reportedly put the sex act to an end. In a statement, the Belly Up Tavern said: "Of course we don't condone this activity in our establishment and security stopped it right away. This is certainly a first for us."
But commenters online who claim to have attended the gig say the couple only stopped the act "when people stopped paying attention to them".