Police investigating the disappearance of an 18-year-old man are interviewing staff and students at his college as the search for him continues.
Russell Bohling, from West Ella, near Hull, was last seen on 2 March and his car was later found in a car park at Bempton Cliffs, East Yorkshire.
Humberside Police are interviewing staff and students at Bishop Burton College in Beverley.
Mr Bohling's family have said they fear he has been murdered.
They believe he may have been killed by someone who found out he was getting £300,000 from his father for a business.
The bricklaying student's disappearance has been described as "totally out of character".
Police have said they are pursuing the possibility that he could have been a victim of crime.
Det Insp Colin Waddington said: "Our main aim is to find Russell and it is vital the public help with the investigation by calling us with any information connected to him, however small they might consider it.
"As part of ongoing investigations, numerous CCTV inquiries and physical searches have been carried out.
"We will continue to pursue each and every line of inquiry that I believe may assist us in determining exactly what happened to Russell and where he might be."
He said police were particularly keen to establish Mr Bohling's movements on 27 February when he left in his car and returned home without letting his parents know where he had been.
Mr Bohling was known to have visited York, Bradford and Bridlington and police also want to speak to anyone who may have seen him there or know why he had travelled there.
He is described as white, about 5ft 8ins tall with a medium build and short, straight brown hair.
He was last seen leaving for Bishop Burton College wearing a black Ben Sherman jacket, blue jeans and black leather trainers.