A lunatic on Twitter appeared to threaten Conor McGregor with an AK-47 and the UFC is investigating.

Featherweight champion Conor McGregor riled up some feathers when he went to California for the UFC 196 press conference and proceeded to speak rather unkindly about his opponent Nate Diaz. Included in the many expletive laced rants were some shots at Diaz and his roots that could be viewed as racist, as the video below labels them.

“I honestly like Nick’s little brother,” McGregor said. “How can you not like him? He’s like a little cholo from the hood. But at the same time, he coaches kid’s jiu jitsu on a Sunday morning and goes on bike rides with the elderly. He makes gang signs with the right hand and balloon animals with the left hand.”

One particular fan, presumably of Diaz or perhaps a resident of California since he took offense to the comments (but he is wearing an Ohio State sweater), took exception with McGregor’s comments about Diaz and his neighborhood. The keyboard warrior sent a tweet at Conor McGregor’s Twitter account that could be deduced as a thinly veiled threat at the featherweight champion.

Famed MMA GIF maker Zombie Prophet called the UFC’s attention to the tweets. From there the UFC took swift action, getting their security team involved and alerting McGregor’s security team. The UFC also reached out to Twitter to take action, and the user’s account has since been removed from the social media network. From a law enforcement perspective, the FBI is taking the threat seriously and investigating as well.

For now, the UFC is trying to keep the situation under wraps.

Seriously, it is ridiculous that a fan would go as far as to threaten a fighter regardless of what was said. That is an extreme that any conflict should never escalate to because gun violence is never the answer. Threats centered around gun violence should never be taken lightly, and props to the UFC for addressing it quickly.