UK markets open in 5 hours 32 minutes

Watch: Conor McGregor appears to 'punch' man in whiskey dispute

Conor McGregor could be in trouble following an incident in a pub. (Photo by Jeff Bottari/Zuffa LLC/Zuffa LLC via Getty Images)

MMA superstar Conor McGregor is making headlines outside the octagon once more after a video appears to show the fighter hitting a man in a pub.

The incident reportedly took placed at The Marble Arch Pub in Dublin on April 6 this year.

In the video obtained by TMZ, McGregor is seen twice trying to give the man a glass to sample of his Proper 12 branded whiskey.

After the man rejects the glass both times, McGregor then pours a round for others in the venue.

The video cuts to a few minutes later with McGregor gesticulating with his arm.

It’s unclear whether he and the man at the bar are exchanging words, but an agitated McGregor swings with his left hand, appearing to strike the man on the side of the face.

READ MORE: 'You're a f***ing tool bro!' Nick Kyrgios smashes two racquets during defeat
READ MORE: Ruiz hits out on fight in Saudi Arabia: 'I have not signed anything yet'

READ MORE: Furious Anthony Joshua calls Lennox Lewis a 'clown' as war of words intensifies

Incredibly, the victim doesn’t seem particularly fazed, remaining seated as McGregor’s entourage quickly usher the former UFC featherweight and lightweight champion away.

According to TMZ, Police are aware of the video and are still investigating but say no arrests have been made as yet.

The incident is just the latest in a long list of controversies surrounding the Dublin-born grappler.

McGregor escaped jail time in 2018 after throwing a dolly at the window of bus containing rival UFC fighters.

There were ugly scenes following McGregor's loss to Nurmagomedov in Vegas. (Photo by Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images)

Later in the year, McGregor’s loss to bitter rival Khabib Nurmagomedov descended into chaos after a mass brawl involving member’s of both fighters’ teams following match.

Both men were fined and banned following the Las Vegas incident.

Earlier this year, McGregor was involved in an altercation where he reportedly took a man’s phone and smashed it on the ground, although criminal charges were eventually dropped.

Following the Nurmagomedov debacle last October, it is unclear when McGregor is expected to return to action in the UFC.

Watch our videos: