After failing to make weight to deny him a shot at the WBC super lightweight title, Garcia beat Haney via majority decision after knocking his opponent down three times at the Barclays Center.

But it has since emerged, as per ESPN, a document sent from the Voluntary Anti-Doping Association showed that Garcia tested positive for the banned substance ostarine the day before and on the day of the fight.

He has denied taking any performance-enhancing drugs in a bizarre video on X, before doubling down on Instagram live.

But on Thursday night, UFC star McGregor let rip in a post that he has unsurprisingly since deleted.

Having originally congratulated Garcia on the victory, he demanded the 25-year-old to be given a lifetime ban.

McGregor also called out Garcia and UFC bantamweight champion Sean O’Malley for a spar and pledged to cover flights and hotels.

“Cheated the weight and was juiced, lifetime ban,” McGregor wrote.

“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 it reminds me of Sean O’Malley was on that as well. I don’t like this, I’ll bust yous both up, do yous want a spar I will set the flights 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’re at?

“If I was Haneys [sic] dad you’re dead no matter what for doing that. Crazy. What the f*** happened to you, you little fool.

“Get your head together cos I 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.”

Haney fumed in a statement released to ESPN and asked for Garcia to apologise to the fans, while ‘King Ryan’s promoters Golden Boy commented saying: “Ryan has put out multiple statements denying knowingly using any banned substances – and we believe him.”