Police have visited schools in the north-east to speak to pupils about missing teenager Liam Smith.
The 16-year-old of Aberdeen, has been missing from home since Saturday and a major search operation is to continue today.
Police held assemblies at Liam’s school Westhill Academy on Monday and at Aboyne Academy on Tuesday.
They spent Wednesday and Thursday talking to Banchory Academy students, urging them to report any recent contact Liam has had with them.
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CCTV cameras captured Liam walking into Union Square shopping centre on Saturday afternoon.
Liam took a Stagecoach 202 bus from Aberdeen and bought a ticket to Raemoir Road in Banchory, though it is not clear if he got off there.
His mother Alix has thanked people for their support with the search and in a direct appeal has said: “Please know he is not in trouble – we just want him home.”
Ch Insp Martin Mackay added: “There are a number of people we know got on the bus at the same time and bought tickets to the same destination. We still continue to ask anyone who was on the 1.11pm 202 bus to Deeside to contact us.”
Police are searching all parts of Banchory, including an area of land near The Falls of Feugh restaurant, and another area near Raemoir Garden Centre.
They are asking Banchory residents to check CCTV footage.
Officers also released images of the kind of backpack Liam was carrying, a North Face Borealis Classics bag, and the Nike Air Max trainers he was wearing.
Anyone with information is asked to call police on 101 quoting reference number 1302 of November 18.