A?Dublin solicitor was one of four people arrested on Friday in relation to the murder of a man in Dublin last September.

Jason Martin (39) died following a fight in a car park at a pub on Park West Road, Ballyfermot, in the early hours of Sunday 27 September. The solicitor was present when Martin was stabbed to death that night.

She co-operated with gardaí and provided them with information they believe will help bring a murder charge against the man who knifed Martin to death.