Search fails to find missing Barry Turner
Concern is mounting for a man with eyesight problems who has not been seen since Thursday evening.
An air, sea and land search was carried out over the weekend after 55-year-old Barry Turner was reported missing from his home in Tain, Ross-shire.
But the keen hillwalker had still not been found by Monday morning.
Police said there were "reasons to be concerned for his wellbeing" and appealed for anyone with information about his whereabouts to contact them.
The search has involved 25 members of both the Assynt and Dundonnell mountain rescue teams, five search and rescue dogs, three rigid inflatables from the Red Cross water rescue team, a Sky Watch light aircraft, police dogs and numerous police officers.
Mr Turner is described as being about 5ft 10in tall, with swept-back, greying, balding hair. He is clean shaven with blue/grey eyes.
He always wears reactive-style sunglasses due to an eye complaint, and has a large mole on the left side of his face, beside his nose.
When last seen at his home at 1945 BST on Thursday he was wearing a white shirt with blue stripes and blue walking trousers.