Police in Ireland are reportedly investigating an assault allegation against UFC fighter Conor McGregor.

Niall O'Connor and Ciara Phelan of the Irish Mirror reported a man said McGregor punched him in a bar. Police confirmed they are investigating an alleged assault at Marble Arch pub in Dublin, but they did not name any suspects. 

Per O'Connor and Phelan, one source said, "McGregor was being a showoff in the pub and one man didn't like it and went up to have a word with him," while another said someone mocked the fighter for his loss to Khabib Nurmagomedov before the alleged punch.

In mid-March, the Associated Press reported another man filed a lawsuit against McGregor for more than $15,000 in damages, alleging battery, assault and intentional infliction of emotional distress for stomping on his phone as he attempted to take a picture of the fighter.

TMZ Sports shared video of the incident:

O'Connor and Phelan noted charges from that incident were decreased from a felony to a misdemeanor after it was discovered the phone was worth less than initially thought.

On March 26, Tariq Panja of the New York Times reported Irish police are also investigating McGregor after a woman said he sexually assaulted her at a Dublin hotel in December.

As for the latest allegation, it is notable the source said someone teased McGregor about his loss to Nurmagomedov considering the two fighters have recently engaged in an ugly back-and-forth via social media.

Ben Fowlkes of MMA Junkie summarized the exchanges, noting Nurmagomedov compared McGregor to a "jealous wife" and called him a rapist. McGregor insulted Nurmagomedov's wife and their religion and later apologized in a tweet that said, in part, "All faiths challenge us to be our best selves."