Conor McGregor, who defeated Donald “Cowboy” Cerrone in 40 seconds at UFC 246, was the subject of several vile posts on the official Twitter account of fellow UFC fighter Kamaru Usman, along with threatening messages involving McGregor’s girlfriend, Dee Devlin.

Usman’s manager Ali Abdelaziz said Usman’s Twitter was hacked, and Usman denied sending the tweets.

“It’s sad we live in a world where people actually do stuff like that,” Usman said on Saturday. “It is what it is. It’s part of life now. Obviously that wasn’t me. Whoever is tweeting those things, I mean, come on. Hopefully you got your 10 seconds of fame. That’s not me. That’s obviously not my character.”

One tweet from the account said, “I’ll f–k your wife while slapping the f–k outta you punk.”

Another tweet made reference to more vile sexual acts involving Devlin — who wasn’t specifically named — and another tweet shared bank-account information said to be belonging to Usman.

McGregor, however, wasn’t buying that Usman’s account was hacked.

“I’d be skeptical of that, because one came through early and it had all the hallmarks of that little f—kin weasel, Ali,” McGregor said after UFC 246.

He later added that he didn’t believe Usman himself was responsible for the vile tweets.

The UFC was investigating the alleged hacking. UFC president Dana White quickly phoned McGregor to update him on the situation, hoping McGregor wouldn’t confront Usman.

“I called Conor and I said, ‘He got hacked, so don’t say anything, don’t do anything,’” White said. “Usman and Ali are sitting right in front of where Conor comes out.

“They put his bank account out there and his pin code. Crazy s—t,” White added. “That’s crazy, man, horrible.”