Specialist diver teams focused on the River Dee today as the hunt for missing David Strachan continued.
Mr Strachan, 51, was last seen in the Wilson Road area of Banchory at around 9pm on Tuesday, November 19.
He is known to sleep rough occasionally, and police say he has gone missing before, concerns are increasing as he has never disappeared for such a long time before.
This morning police stepped up their investigation in the Banchory area.
Dive teams were sent into the River Dee, near the bridge that takes Dee Street across the river to the south of Banchory, to look for clues that could help to trace the missing man.
Police have also been carrying out door to door inquiries, and looking through CCTV footage.
Inspector Allen Shaw, from Stonehaven police station, said: “We just want to make sure that he is safe and well.
“Officers led by a specialist search advisor are currently carrying out further searches in the Banchory area to trace David.
“He has been known to sleep rough, so officers are currently carrying out searches in parks and woodland in the local area.
“I would also ask residents in Banchory to check their gardens and outbuildings, in case he has taken shelter there.”
Mr Strachan is described as white, around 5ft 10in with short fair hair.
When he was last seen, he was wearing black jeans, a blue fleece top, a black V-neck jumper and a red shirt.
Insp Shaw added: “We know that David has family and friends in Perth, and we are liaising with our colleagues in that area who are carrying out further inquiries and searches in case he has travelled to Perth.
“I would urge anyone who may have seen David, or who has any information on his whereabouts, to contact us.
“I would also appeal directly to David himself to contact us, or a member of his family, to let us know he is safe.”
Anyone with information is urged to phone the police on 101.