Michael Cullen was last seen on 9 January.
North Belfast PSNI has issued an appeal for any information on the whereabouts of Michael Cullen, who was reported as missing from his home in the North Circular Road area in Belfast by his family.
Michael was last in contact with his family at around 2pm on Tuesday, 9 January.
He is described as being 5 ft 11' tall with dark hair and a beard. He was last seen wearing a green puffa jacket, grey jumper and black trousers.
"Police are becoming increasingly concerned for the welfare of Michael Cullen", the PSNI said.
"We are appealing for Michael or indeed anyone who knows of his whereabouts to contact us on 101 quoting reference number 622 9/1/18."
