Conor McGregor Appears To Punch Old Bloke In Bar

Grainy CCTV footage shows the retired mixed martial arts fighter in an incident in a Dublin pub.

In the alleged attack which reportedly occurred on April 6 this year, McGregor, 31, can be seen drinking shots of Irish whiskey with people in the pub.

He was apparently shouting people shots of his own whiskey brand, Proper No. Twelve.

One bloke seated at the bar appeared disinterested in sampling the "smooth approachable blend", and McGregor was seemingly neither smooth nor approachable towards him -- appearing to take a swing at his head.

McGregor was then quickly dragged away by others in the room.

READ MORE: Conor McGregor Quits Fighting, Offers To Buy Everyone Pina Coladas

A spokesperson for Ireland's police service told CBS News that they would not comment on McGregor specifically, but they did say they're investigating an assault at the bar that happened around the time matching the video.

"Investigations are ongoing in relation to this incident and no arrests have been made to date," the spokesperson said.

The controversial fighter announced in March that he is retiring from mixed martial arts. Earlier that month, he was arrested for allegedly smashing a fan's phone in Miami Beach.

READ MORE: Conor McGregor Arrested In Miami For 'Criminal Mischief'

McGregor's Miami mugshot.

McGregor returned to UFC earlier this year after a bit of a gap year in his career when he made his boxing debut, losing to Floyd Mayweather in the richest fight in boxing history.

He was suspended from UFC for six months and fined $50,000 for a brawl after his loss to Khabib Nurmagomedov last October. McGregor said he regretted the backstage brouhaha.