Police are trying to trace a member of the public whose drone may be the key to finding missing man Alastair Done.
It is just over a week since the 25-year-old from Cheshire was last seen at Balmedie beach after travelling up from Crewe Train Station.
Police have confirmed there have been numerous reported sightings of Mr Done and they believe he was in and around the beach at about 3pm on Saturday.
In addition they also believe a drone was being used in the area.
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 inquiries.
“Thank you once again to the public for your assistance and information so far, and to Aberdeen Coastguard which has been assisting with searches.
Mr Done was spotted in the car park by a dog walker who subsequently raised concerns over his well being with the police.
He was later identified as having travelled from Crewe Train Station on Friday, January 4 to Aberdeen Railway Station where he arrived at 3.51pm.
He went into Aberdeen Market and was captured on CCTV at the Premier Stores at Balmedie at around 1pm on Saturday, January 5 buying food and drink.
Since then clothes that match those he was wearing have been recovered on the beach around one mile north of the car park.
Police have also now confirmed he stayed at the White Horse Inn at Balmedie on Friday night and was also spotted walking along the dual carriageway in the direction of Balmedie that same day.
Specialist police units, including a helicopter, have been helping carry out searches in the area.
Mr Done is about 5ft 11ins, has a cropped haircut and wears glasses.
When he was last seen he was wearing a black hooded fleece, black walking boots and was carrying a black rucksack with a blue roll-mat attached.
He was also carrying a green shopping bag.