Gardaí are continuing to question a man in his 20s, over the murder of Ciarán Noonan, the man who was abducted from a Dublin street last October.
The 29-year-old's body was found in a ditch in Co. Meath last November, over a month after he disappeared from the East Wall area.
The man arrested yesterday evening is being held at Store Street Garda Station in Dublin, under Section 4 of the Criminal Justice Act.
He is the twelfth person to be arrested as part of the investigation.