A man in his 40s has been arrested in connection with a shooting in Wicklow on December 14.
Clinton McCormack died following the incident at a building site in Delgany, while a teenager suffered injuries.
Gardai this morning carried out six searches across Wicklow and Dublin as part of their investigation.
The man arrested is being detained at a Garda station in the Eastern region, where he can be questioned up to 24 hours.