The mother of an Irish Olympian who was injured in an incident in Dublin in the early hours of yesterday morning, said her son was "much more concerned" about other people who were also hurt in the alleged assault.

Taekwondo athlete Jack Woolley sustained an injury to his face in the incident on Grattan Bridge and was taken to St James's Hospital for treatment.

The 22-year-old said he and a friend went out for a meal before heading to a bar.

In a post on social media, he said that while they were walking back along the boardwalk at the River Liffey, "a gang of roughly 8-12 men and women in their 20s began violently attacking people.

"Unfortunately I was victim to these random attacks as I was just walking by, before I was punched in the face by one of these group members."

Mr Woolley said he was punched only once, before being told "my mistake wrong person", as the group then ran off.

His mother, Annette, said he called her afterwards and said he was upset and couldn't talk very well.

Speaking on RTÉ's Brendan O'Connor, she said: "He was upset, and he couldn't really talk very well, but I could still understand him, so he was alive.

"His life wasn't being threatened, so you know we weren't worried too much.

She continued: "He was much more concerned about the other people who had been attacked because their injuries were so much worse than his."

Ms Woolley said she believes it was a random attack.

"I know there's some suggestion out there that he was targeted on purpose, but you know if you look at the circumstances, it really couldn't have been.

"Five other people all with no other connection to each other at all attacked at the exact same time in the same place.

"It was just wrong place, wrong time.

"The fact that the chap as soon as he hit him, said 'sorry wrong person' before he ran off, it's just very strange."

Ms Woolley said her son did not have time to retaliate after the punch, but in the moment, he was unsure if he even should, given the discipline attached to taekwondo.

"It all happened in a split second but he did say that as soon as he registered what had happened, you know after the initial shock of it happening, because there was absolutely no warning he didn't see him coming at all, it flashed through his head 'do I fight back, do I defend myself, do I not?'

"Because it is something that's instilled in you not to do.

"It's not MMA. It's a very respectful sport. They're very conscious about safety."

She added: "You don't go out to hurt, you go out to score points."