New searches for Hertfordshire man missing in Sutherland
An 80-year-old angler from Hertfordshire remains missing after extensive searches around a river in the Highlands.
Ian McMullen failed to return from a trip to fish the River Oykel, near Lairg, in Sutherland, on Thursday.
A search was made on Thursday evening followed by an effort involving coastguard teams, a mountain rescue team and police dogs on Friday.
Police said the effort to find Mr McMullen would continue.
He was reported missing at about 18:50 on Thursday.
Police said the multi-agency effort to find him has involved East Sutherland Rescue Association, local coastguard teams, a coastguard helicopter, Assynt Mountain Rescue Team and police dogs.
'Extensive search activity'
Mr McMullen is described as being about 5ft 9in tall and of large build with a distinctive brown mark on his left check.
He was wearing grey full length waders and possibly a grey lifejacket.
Insp Jamie Wilson, of Police Scotland, said: "Unfortunately Mr McMullen remains missing following extensive search activity on the River Oykel and the surrounding area.
"I would like to take the opportunity to thank the public and all our partner agencies for their support with this search.
"Further activity will continue over the weekend."
He added: "I would again ask anyone who has information on Mr McMullen's whereabouts or believes they have seen him to contact Police Scotland."