Specialist search officers have been deployed in the search for a missing 58-year-old man who has not been seen in three days.

Alan Galbraith was reported missing by his family on Sunday after they, along with Alan, spent an evening at a friend's house.

He was last seen around 2am on Sunday morning near the old abattoir on Dundonald Road in Kilmarnock.

Police have said they are "increasingly concerned" for Mr Galbraith who failed to turn up for work in Glasgow on Monday morning.

The force's underwater unit have been involved in the search as well as dog units.

Chief Inspector John Cairns said: "From speaking with Alan's family and friends, this is completely out of character and he normally keeps in regular contact.

"The weather has turned making it very cold at night and we are very concerned that he could have fallen or taken unwell.

"We are continuing to search areas close to where he was last seen and we are following up any leads with his family, friends and acquaintances.

"His family just want to know that he is safe. "I would urge anyone who has information on Alan's whereabouts to contact Police via 101.

"I would appeal to Alan to get in touch with his family, friends or with police as I am becoming increasingly concerned for his safety.

"Alan normally drives to work in his car and doesn’t use public transport regularly but people may recognise him in the Kilmarnock area.

"If you have any information on his whereabouts, please get in touch with officers at Kilmarnock police station via 101."

Officers have been following up enquiries with all known acquaintances to try and piece together where he may have gone following the last sighting.

Alan is described as white, around 6ft tall, stocky build and is bald with grey hair at the back and sides.

He was last seen wearing a blue Northface fleece, blue trousers and tan-coloured boots.