Police are urgently seeking assistance in finding Michael Cotes who is missing from his Boston home.
Michael is in his 70s, described as tall, wearing a grey jacket, blue jeans and a baseball hat, carrying a shopping bag.
He had been out with his wife when they became separated in Wide Bargate in Boston at around 2.45am today, Monday December 5.
This is the first time Michael has gone missing. He suffers from Altzeimers.
Anyone who believes they might have seen Michael is urged to call 101.