Jordan Sullivan, 19, was last seen at approximately 9.30am on Tuesday 14 February 2012, near the River Ouse in Naburn. He removed his clothing and ran towards the river.
He is described as white, approximately 5ft 9in tall with a slim build and short dark hair. Jordan also has a tattoo of a crucifix running between his shoulder blades.
The searches being carried out by officers from North Yorkshire Police and the Underwater Search Unit and air support from West Yorkshire Police have continued today. The team from Scarborough Search and Rescue will continue searching while there is sufficient light.
If you can help to locate Jordan Sullivan please ring North Yorkshire Police on 101 and select option 1.