A huge search is underway for a university student who went missing after a night out with friends.
Police have begun scouring riverbanks following the disappearance of Euan Coulthard from a nightclub in Durham.
The 19-year-old student, who is a member of Durham University's St Mary's College, was out on Wednesday evening celebrating a friend's 21st birthday at an Italian restaurant.
He went on to the Love Shack nightclub and was later seen leaving alone. He was last picked up on CCTV crossing the pedestrian Framwellgate Bridge.
Police were searching the banks of the River Wear close to Durham city, and fellow students were keen to join in an urban search for popular Mr Coulthard, who comes from Nottingham.
Mountain rescue experts were also involved, checking steep wooded areas.
Shopkeepers in Durham have put up posters, scores of fellow students have joined searches, and a Facebook campaign to find 19-year-old Euan Coulthard has been "liked" more than 2,000 times.
He has not responded to emails, texts or online messages, which friends said is out of character.
Mr Coulthard is 5ft 9in, of average build, with light brown hair, which is short on the sides and longer on the top. When last seen he was wearing black skinny jeans, a denim jacket and a beige patterned shirt.
Inspector Dave Coxon said: "It is now about 39 hours since Euan was last seen and, obviously, as time gets on we are increasingly concerned for his welfare.
"Officers have been searching the area where he was last seen and have progressed along the river banks this afternoon. Searches will continue over the weekend."
