Arrest over man's disappearance in 2009
Police investigating the disappearance of a vulnerable man on medication seven years ago in Northern Ireland have made an arrest.
Mark Gourley, 36, from Carrickfergus, went missing on March 7 2009. He was last seen in the Burney's Lane area of Glengormley.
A 45-year-old man was detained in the Carrickfergus area.
Police launched a murder investigation in 2013 but the victim's body has not been located.
Detective Inspector Darren McCartney said: "Mark was a vulnerable individual and was on medication at the time of his disappearance."
He did not have a mobile phone or a significant amount of money with him when he vanished.
Mr McCartney added: "I believe there are people in these communities who have knowledge of what happened to Mark.
"Today's police activity is proof that police are continuing to investigate what happened to him. Additionally, people may have heard rumours about what happened to Mark.
"I would appeal to them to share this information with police."
He was from the Castlemara area of Carrickfergus and may have returned to that area on March 7 2009, investigators said.
Police are asking for anyone who may have noticed vehicles or individuals acting suspiciously in either the Burney's Lane area of Glengormley or in the Castlemara area of Carrickfergus around March 7 2009 to contact them.
Police arrested a second man in the Carrickfergus area on Monday. The 43-year-old was taken to a police station in Belfast for questioning.