Detectives carrying out a review into the disappearance and death of a man six years ago are to begin questioning people in the village where he lived.
Stefan Sutherland, 25, vanished from his home in Lybster, Caithness, in September 2013. His body was found on a beach 11 days later.
His family wants his death to be investigated as murder.
Police said a team of 15 officers would carry out door-to-door inquiries across the area in the coming days.
They have also urged anyone in the local community with information to come forward and said a mobile police office would be parked in the village where people could speak to officers.
Police Scotland announced last year that “all aspects” of the initial investigation into Mr Sutherland’s death would be looked at.
They said the review was being done to address concerns raised by Mr Sutherland’s family.
Detectives met with Mr Sutherland’s family in November last year and also visited locations connected to the case.
Mr Sutherland’s family dispute that his death was accidental and say blood was found at a house he visited before he disappeared.
His disappearance from his home was followed by searches of the local area by police, search dogs and a mountain rescue team.
Det Supt Graeme Mackie, who is leading the review, said: “We are keen to establish if local residents or anyone who may have visited the area between Friday 6 September 2013 and Tuesday 17 September 2013 has information which may assist our inquiry.”
He added: “Stefan was well known in the local community and I would also encourage those who saw him between 22:00 on Friday 6 September 2013 and 12:00 on Tuesday 17 September 2013 to contact us.”