Conor McGregor’s trainer has been arrested over fatal assault in Dublin

It doesn't seem to be the best of times for Conor McGregor lately as one of his trainers has been arrested in relation to a deadly assault in Dublin.

The Herald reports that Jonathan Dargan, who coached Conor in Taekwondo for a number of years, is a doorman at the popular Dublin nightclub Lillie's Bordello.

The Tallaght man was arrested by Gardaí investigating the death of Patrick Mullally, who was punched over the weekend in his bid to break up an argument, and later died from his injuries.

Mr. Mullally was on his way home from his own retirement party at the time.

After being questioned for a few hours at Terenure Garda Station, Mr. Dargan was released without charge. According to the Irish Independent, he was not previously known to Gardaí and had a clean record.

It's thought Mr. Dargan ended up in a verbal row with a woman close to him on the night in question, with Mr. Mullally attempting to step in to intervene.

No other information has been released.