Boxer Ryan Garcia responded Friday to UFC star Conor McGregor's scathing take on his positive performance-enhancing drug test prior to his victory over Devin Haney last month.

In a since-deleted post on X (h/t Sean O'Brien of TalkSport), McGregor expressed dismay over Garcia's positive test, suggesting that he didn't want to be associated with Garcia in any way moving forward:

"Cheated the weight and was juiced, lifetime ban. Sad to see, sad to say. Sad and a bit sick. Don't come near me if I see you ever Ryan Garcia. I am actually disgusted.

"This ostarine reminds me of Sean O'Malley was on that as well. I don't like this, I'll bust yous both up, do you want a spar I will set flight right now for you both for a full on spar each. Hotel, black forge inn the lot. #LetsSparOMalley and #Garcia two little ostarine heads I'll ride you both like yous are ostriches.

"Wtf is up. What do you think you are at? If I was Haney's dad you're dead no matter what for doing that. Crazy. What the f--k happened to you, you little fool. Get your head together cos I'm gonna smash it in with elbows if you don't.

"Fair play Devin well done. Your performance has just become even more heroic! Bravo. GET YOUR HEAD TOGETHER OR KILL YOURSELF."

In a subsequent post on X, Garcia called out McGregor, accused him of using PEDs and threatened to break his ankle:

Garcia shockingly beat the previously undefeated Haney on April 20 by majority decision, but ESPN's Mike Coppinger reported Wednesday that Garcia's drug test, taken one day before the fight, came back positive for the PED ostarine.

While Garcia can request to have his B-sample tested, he stands to have his win overturned if that comes back positive as well.

In a video posted on X after news of his positive test was first reported Wednesday, Garcia denied having ever taken steroids.

Garcia was originally supposed to challenge Haney for the WBC super lightweight title, but Garcia came in more than three pounds over the 140-pound limit, so the title could not be put on the line. The two sides agreed to a revised contract and had the fight anyway.

Despite Haney being a decided favorite, Garcia knocked him down three times en route to victory.

After Garcia's win, McGregor was one of the most high-profile names to praise him, writing the following in a since-deleted tweet (h/t Alexander Behunin of MMAMania.com):

"Yup Jesus and the sesh! Ya's know f--k all, peasants, stay out of our ear! Well in Garcia. An amazing fight from two champions! Have now fought each other 7 times! That's incredible. Some are just born to fight! Some aren't. If you aren't be sure to be a good gatherer cos I be hungry. God speed to both men and teams in this crazy world and congrats Ryan Garcia! Tonight is your night, I knew when he fought Tank that this guy was electric."

McGregor is a combat sports icon, as the 35-year-old Irishman owns a career MMA record of 22-6 and has held the UFC featherweight and lightweight titles.

McGregor has not competed since his loss to Dustin Poirier in July 2021, during which he suffered a broken leg. However, he is scheduled to make his return to the Octagon against Michael Chandler at UFC 303 in June.

McGregor does have one pro boxing match to his credit, as he lost to Floyd Mayweather Jr. in 2017. Perhaps he and Garcia could settle their differences in the ring at some point.