The UFC lightweight champion Khabib Nurmagomedov apologised on Saturday for causing a brawl by the octagon after defeating Conor McGregor.

Moments after McGregor's fourth-round submission, the 30-year-old Russian jumped over the cage and headed towards the Irishman's team, prompting a melee.

'I know this is not my best side,' said Nurmagomedov: '[But McGregor] talked about my religion, he talked about my country. He talked about my father. He came to Brooklyn and he broke a bus. He almost killed a couple of people. What about this shit?'