A man arrested for questioning over the murder of teenager Keane Mulready Woods in Drogheda, Co Louth in January has been released without charge.
A file is to be prepared on the man, aged in his early 20s, for the Director of Public Prosecutions.
He was arrested on Thursday and detained at Mountjoy Garda station in Dublin’s north inner city under Section 42 of the Criminal Justice Act, which allows gardaí to arrest a person who is serving a sentence or awaiting trial.
A second man, also in his 20s, detained as part of the investigation is still being detained at Dundalk Garda station, a Garda spokesman said on Friday night.
He was being detained under Section 50 of the Criminal Justice Act, which is used for offences linked to organised crime and allows for a suspect’s detention for up to seven days without charge.
Their arrests in separate operations on Thursday in Dublin and Louth followed the arrest of a man in his 40s on Tuesday. He was still being detained at Drogheda Garda station on Friday under Section 50 of the Criminal Justice Act.
Keane (17) was killed in January and his remains were dismembered and dumped in different locations in Dublin, though some parts of his body are still unaccounted for.