UFC 229 between Irishman Conor McGregor and Russian Khabib Nurmagomedov was marred by an ugly post-fight brawl on Sunday.
After Khabib defeated McGregor in the fourth round, the Russian jumped the cage and sparked a brawl with McGregor's coaching team.
A number of people also targeted McGregor inside the octagon as security struggled to contain the furore.
UFC President Dana White said: "I'm just disgusted and sick over it."
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The three men who targeted McGregor were arrested but White said McGregor had decided he would not press charges.
Five hours later McGregor tweeted that he was "looking forward to the rematch".
The man known as "The Notorious" also posted a picture of himself before yesterday's fight on Instagram with the caption "I'll be back".
Nurmagomedov apologised on Sunday saying "I know this is not my best side."
But he took a swipe at his opponent.
"He (McGregor) talk about my religion, he talk about my country, he talk about my father, he came to Brooklyn and he broke bus, he almost kill a couple of people."
