Searches are continuing in Wester Ross for 77-year-old Roger Fletcher, who has been missing since Sunday.
He was last seen when he set off from a holiday home in Bundalloch, near Dornie, for a walk at around 8.30am and the alarm was raised when he failed to return.
Extensive searches have been carried out this week in the Dornie, Bundalloch and Glenshiel areas and around the A87 Invergarry to Kyle road in the Cluanie direction.
Police officers, police and SARDA dogs, Kintail and RAF Mountain Rescue Teams and lifeboat and Coastguard personnel have been involved in the search effort.
South Highland Area Commander Chief Inspector Brian Mackay said: “It’s been five days since Mr Fletcher was reported missing and we are extremely concerned for his welfare, as are his family and friends.
“Police and partners have been searching in the area we believe Roger intended to walk, but also extending the search towards the A87 and surrounding hills and woodland.
“As we approach the weekend, officers would appeal to anyone who is walking in the area to bear the search activity in mind and report anything you feel may assist.
“We would also reiterate our appeal to anyone who lives or visits locally to check gardens, outbuilding and sheds.”
He added that members of the public were thanked for the good response to the appeal so far.
Searches planned for the weekend are expected to include police officers and dogs, together with local and RAF Mountain Rescue Teams.
Mr Fletcher has white hair, wears glasses and walks with a stoop.
He uses walking poles and is understood to have been carrying a small, khaki-coloured rucksack.
Anyone with any information to assist the search is urged to contact police on 101.