A 52-year-old man has been released without charge after questioning in connection with the murder of a 12-year-old boy in Tallaght in Dublin 11 years ago.
A file is being prepared for the Director of Public Prosecutions.
Stephen Hughes Connors died following a fire at a makeshift den near his home in the Rossfield Estate in 2001.
A 14-year-old boy was also in the den at the time but escaped the blaze.
Gardaí made a renewed appeal about the fire last September.
The incident also featured on a Crimeline programme in 2003 and re-examined by the Serious Crime Review Team, who made an arrest in 2006.
