Conor McGregor

UFC star Conor McGregor is retiring.

The 27-year-old took to Twitter on Tuesday (April 19) to make the announcement, writing: “I have decided to retire young. Thanks for the cheese. Catch ya’s later.”  He did not offer further explanation.

The decision comes just one week after fighter Joao Carvalho died from injuries suffered during a fight earlier this month, which McGregor attended.

On Facebook, McGregor reacted to the news: “To see a young man doing what he loves, competing for a chance at a better life, and then to have it taken away is truly heartbreaking.”

He’s currently scheduled to fight Nate Diaz in a rematch at UFC 200 on July 9. The two met earlier this year at UFC 196, in which Diaz upset McGregor in his welterweight debut… via submission.

The UFC has not commented on the news.