Gardaí have arrested a 23-year-old man in relation to the murder of John Gibson.
Mr. Gibson was shot dead at City West Shopping Centre in Dublin in September two years ago.
He received medical assistance at the scene, but was pronounced dead a short time later on September 18th.
The man was arrested on Saturday morning.
He is expected to appear before the Criminal Courts of Justice later.
This is the fifth arrest over the killing.