A second image has been released by gardaí investigating the murder of Kieran Cunningham in Galway.
Mr Cunningham was attacked in the Williamsgate Street area of the city around 2am last Wednesday.
A CCTV image of a man, accompanied by a woman, was issued to the media earlier this week after the fatal stabbing incident in the city centre .
A woman was arrested in Galway yesterday but has been released without charge.
