Police are encouraging people to come forward with information after CCTV images of missing Aberdeen man David MacLeod were released to the public.
The 18-year-old was reported missing on Friday after he was last seen in the Stafford Street area of the city around 1pm.
Officers and a dog unit are continuing extensive searches in the areas of Grandholm and Danestone, Hillhead and Seaton Park, with assistance from a drone camera.
Dive and Marine Units will also be searching on the River Don from Persley Bridge to the mouth of the river.
Mr MacLeod is described as being around 6ft and of a thin build with a pale complexion with brown eyes and brown hair. He has a small scar on his cheek and is normally clean shaven.
The images show him wearing a waterproof jacket with a horizontal red stripe at the bottom which merges to grey and then black, black jeans and black trainers.
He was also carrying a black rucksack.
Inspector George Nixon, from North East Division, said: “Along with David’s family and friends, our concerns for his welfare are growing as the days pass since he was last seen.
“I am asking anyone who was in the Grandholm, Seaton, High Street and Bridge of Don areas on Friday afternoon to look at the images to try and jog their memory. If you think you may have seen David, get in touch.
“Additionally, I would ask anybody who lives in the nearby areas to check sheds, outbuildings or gardens for anything which may assist us in our inquiries.”
Police can be contacted by calling 101.