Ashton Kutcher Ashton Kutcher

Ashton Kutcher got into a violent altercation with a security guard at California's Stagecoach Music Festival this weekend, after the guard tried to stop a fan from asking Kutcher for an autograph, TMZ reports.

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Kutcher was near the stage in the VIP area watching a performance when a woman approached him to shake his hand, TMZ reports. Kutcher had started to talk to the woman when a security guard stepped in and reportedly shoved both the woman and Kutcher.

Kutcher shoved the guard back and had to be restrained by his friends, TMZ reports. He left the festival of his own volition.  Eyewitnesses tell TMZ it was the guard, and not Kutcher, who started the fracas.