Officers have appealed to a member of the public believed to have been flying a drone at Balmedie Beach in their search for a missing man.
Alastair Done, a 25-year-old from Cheshire, was last seen at the beach on January 5.
According to information provided to the police by the public, officers believe that Mr Done was still in the area at around 3pm.
Police have now issued an appeal for a man who was flying a drone on the beach that afternoon to contact them, as they believe he may have information.
Detective Inspector Sam Buchan said: “I would urge the person flying this drone to get in touch as soon as possible – you may have captured footage of Alastair but not realised and it may be crucial to our enquiries.
“Thank you once again to the public for your assistance and information so far, and to Aberdeen Coastguard which has been assisting with searches.”