Bantamweight contender Miguel Torres was released by UFC on Thursday, according to the promotion's president, Dana White.
White revealed the news during an interview with SI.com.
Torres' release came after he posted a comment on his Twitter account that UFC deemed offensive.
"If a rape van was called a surprise van more women wouldn't mind going for rides in them," SI.com quoted Torres as saying.
The tweet was later removed from Torres' account and replaced by this comment: "If a windowless van was called a surprise van more people wouldn't mind going for rides in them. Everyone likes surprises."
But the change came too late to prevent Torres (40-4) from being cut from UFC's roster.
"There's no explanation for that," White told SI.com. "There's absolutely nothing I could say to make any sense of that. And the fact that he even thinks that's funny or that's a joke, it disturbs me. It bothers me.
"Again, you're dealing with a guy (who's) a smart guy, that owns his own business, that's been one of the top fighters in the world forever. And I cut him today. He's no longer with the UFC."
Torres issued an apology to UFC and mixed martial arts fans Friday on his personal website.
"I am very sorry for upsetting my bosses at the UFC, and also to my fans and everyone else who was upset by the language in my tweets," Torres said.
"I understand it was wrong, and I meant no harm or disrespect. Given the chance, I will do whatever it takes to make things right. I am going to learn from this. I think life throws you opportunities that can make you a better person, and so that's what I'm going to do here.
"That is how I am going to react. I am going to use this to improve myself, and I hope that my fans will continue to support me."
Torres, a former WEC bantamweight champion, struggled to find consistency since losing his title to Brian Bowles in August 2009. He is 3-2 since the loss, but looked impressive during his most recent fight -- a unanimous decision over Nick Pace on Nov. 19.
His release came one day after former UFC light heavyweight champion Rashad Evans made a disturbing comment to Phil Davis during a news conference to promote their title eliminator on Jan. 28 in Chicago.
"I bet you won't put your hands on me," Evans told Davis. "I bet you'll be the first one to take a shot -- (because) I'm going to put those hands on you worse than that dude (former Penn State assistant football coach Jerry Sandusky) did them other kids at Penn State."
Davis was a collegiate wrestler at Penn State.
White was not pleased with Evans' comment and spoke to the fighter afterward.
"We talked," White said. "It's not like I'm dealing with stupid people here. It's one thing when you're dealing with dummies.
"When you're dealing with people who are really stupid, it's tough to talk to them. But when you call a guy who's an intelligent guy, he gets it. (Evans) knows."
Franklin McNeil covers mixed martial arts and boxing for ESPN.com. Follow him on Twitter at www.twitter.com/Franklin_McNeil.