By Richard O'Reilly
Police in Derry-Londonderry say they're 'increasingly concerned' for the welfare of Sam Christopher Comber.
The thirty-nine year old from the cullion area was last seen in the city on Sunday.
Also known as Sam Harold, he was seen at a supermarket in the Quayside area before cycling towards the Peace Bridge . His bike was later found in a lay-by in the Newbuildings area.
Police say he was also seen in the Ice Wharf on Sunday afternoon.
Anyone with information on his whereabouts is asked to contact the PSNI.

Four churches share £200,000 to tackle urgent repairs
Irish leaders condemn fuel protests as wrong and ‘not in the national interest’
Police probe suspected arson attack at Coleraine apartment block
More than 100 firefighters tackle Omagh industrial fire as casualty airlifted