'No clues' over missing Hull student Russell Bohling
Police looking for a missing Hull student say no new information has "come to light" since he disappeared one year ago.
Russell Bohling, 19, from West Ella, went missing on 2 March 2010. His car was later discovered at the car park at Bempton Cliffs.
Mr Bohling's family previously said they feared he was murdered as his disappearance was "out of character".
Police said they did not believe Mr Bohling had been the victim of a crime.
They are continuing to appeal for information but are treating the case as a missing person's inquiry.
Insp Colin Waddington, from Humberside Police, said: "A huge amount of police work has gone into the investigation to determine what happened to Russell Bohling and yet nothing at all has come to light that has assisted us in our inquiries."
Mr Bohling was studying bricklaying at Bishop Burton College in Beverley when he disappeared.
His family said they believed he might have been killed by someone who found out he was getting £300,000 from his father for a business.
At the time Humberside Police conducted land, sea and air searches as well as underground searches around Bempton Cliffs.
Mr Bohling's disappearance was also featured on BBC1's Crimewatch Roadshow.
Police still want to establish Mr Bohling's movements on 27 February 2010 when he left in his car and returned home without letting his parents know where he had been.
Subsequent investigations found he had visited York, Bradford and Bridlington but it is not known why he travelled there.
Insp Waddington said: "If anyone saw anything of Russell a year ago, or spoke to him about his intentions at that time, please contact us and share with us what you know."