Police in York have release two images of men they want to speak to in connection with the disappearance of Ben Clarkson.
The 22-year-old,who was last seen in Layerthorpe at 3.40am on Sunday 2 March, has now been missing for five days.
The first person officers are asking to come forward is a white man, wearing a light coloured jacket with dark trousers and shoes.
He walked along Stonebow, heading towards the junction with Foss Islands Road, on the opposite side of the road to Ben.
A short time later, this person takes the same route as Ben as they walk past National Windscreens, Layerthorpe.
The second man officers are asking to come forward, spoke to Ben in the smoking area of Fibbers a short time before he left the club.
He is white, with short dark hair. He was wearing a red checked shirt, fastened at the collar, a white t-shirt and dark trousers.
Officers carrying out searches along the route, and the surrounding area, Ben is believed to have taken on Sunday, have now been completed.
Further searches of the River Foss, in the Heworth Green area, will recommence on Saturday, 8 March.
Ben was last seen wearing dark skinny jeans, a grey t-shirt with an Eiffel Tower logo on the front and dark pumps with white trim and white toe caps.
Anyone who knows of Ben Clarkson's whereabouts should contact North Yorkshire Police on 101, select option 1, and pass the details to the Force Control Room.
Please quote reference number 12140033950.