A man in his late 20's was arrested in relation to a serious assault on another man in Dublin last November.
The man, from the north Dublin area, was taken into custody at around 6am on Monday, January 5.
He was questioned in relation to an attack on a man in his 20's on November 30, 2014 near the junction of Camden St and Harrington St.
The injured male received serious head injuries in the early morning assault and was brought to St James's hospital.
The arrested man has been released without charge and a file is being prepared for the DPP.