There were chaotic scenes at the end of Conor McGregor's unsuccessful return to the UFC in Las Vegas.
He lost to Khabib Nurmagomedov after tapping out to a submission move in the fourth round.
His challenge for the lightweight title then descended into chaos, as Nurmagomedov leapt out of the Octagon and into McGregor's corner, starting a brawl.
McGregor was then attacked in the ring by members of his opponent's team.
UFC boss Dana White says three members of the Numagomedov's team were arrested and later released.
Khabib has since apologised to the Nevada State Athletic Commission for his and his teams behaviour. He says McGregor disrespected his religion, his country and his father.
Khabib post-match press conferencepic.twitter.com/Zzes5p1FP5— SportMargin (@SportMargin) October 7, 2018
McGregor has decided not to press charges.