Welterweight UFC champion Kamaru Usman's Twitter account has been hacked, with a series of expletive-laden and racist tweets being published.
The first sign something was off came during the UFC 246 prelims, with @USMAN84kg aiming an online attack at Conor McGregor and his partner, Dee Devlin.
The tweet, and others that followed it, made aggressive, and sometimes sexual threats.
Sporting News has taken the decision not to publish the details of the most offensive tweets posted by the account as they were aggressive and threatening in nature.
Ten minutes after publishing the first tweet, the hacker posted a screenshot of what appeared to be Usman's bank account.
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The hacker also threatened to publish Usman's bank password.
It is unclear whether the screenshot is legitimate or a fake.
Over the next 20 minutes, the account used racist language to attack Floyd Mayweather and Mike Tyson.
Around half an hour after the first tweet was published, all the offensive material was deleted, leaving a couple of retweets on Usman's feed.
Usman most recently defended the 170-pound title against Colby Covington at UFC 245.
The build-up was ugly, with Covington - a vocal Donald Trump supporter - arguably crossing the line with some of his comments.
Usman initially won the welterweight title with a dominant win over Tyron Woodley in 2019, and is open to a fight with McGregor, who takes on Donald 'Cowboy' Cerrone at UFC 246.
"I'm the champion. That's it. Plain and simple. I am, the champion," he said last week.
"There's a reason they talk about me, because I have the gold.
"Anybody can get it. I've never said no. When Dana White calls and says 'I want you to take out this guy,' I say 'when' and we get it done.
"I'm not the one picking and choosing fights, I've never turned down a fight in my career.
"I've been begging for fights, but now I'm in a position where they can come to me.
"If Conor wants it, Conor can get it too. I don't discriminate from an ass-whopping. Anybody can get it."