A 50-year-old man who was arrested in connection with the murder of County Antrim man Mark Gourley has been released from custody unconditionally.

He was detained in Carrickfergus this morning and taken to a Belfast police station for questioning.

36-year-old Mark Gourley was reported missing on March 7 2009 from Glengormley.

He was described as a vulnerable individual and was on medication at the time of his disappearance.

Police launched a murder investigation in 2013.

His body has never been found.