A hillwalker may have been struck by lightning in a fierce electric storm over Wester Ross on Thursday.

His body was found 3700 feet up in the Fannich Hills near Ullapool on Friday afternoon by rescuers after a search by more than 50 volunteers from four mountain rescue teams.

Last night, police named the dead man as Dr Nicholas Kehoe, a bachelor and consultant orthopaedic surgeon at Hallamshire Hospital and the North General in Sheffield. He lived at Hollow Meadows, Sheffield.

Dr Nigel Coad, 39, an accident and emergency doctor who was with Dr Kehoe in the area, refused to comment about his friend's death.

Dr Kehoe was wearing just a teeshirt and shorts, although he had a rucksack which it is believed contained bad weather clothing. He was last seen at 2pm on Thursday.

Two hours later, thunder and lightning hit the area. Locals said it was the worst storm in decades.

The police communications mast at Braemore Junction was struck by a bolt, as was a klondiker in Ullapool Harbour.

Locals thought the man may have been hit by lightning, or had fallen when a bolt hit the ground near him.

A post-mortem examination will be carried out.

The alarm was raised on Thursday after Dr Kehoe failed to make a rendezvous with Dr Coad at Loch Droma.

Dundonnell Mountain Rescue Team and an RAF Lossiemouth helicopter were called out and carried on their quest throughout the heavy thunderstorms of Thursday afternoon.

Rescuers on foot found Dr Kehoe around lunch-time yesterday.

Mr Angus Jack, leader of Dundonnell Mountain Rescue Team, said Dr Kehoe could have been hit by lightning, or knocked off balance by a bolt which landed nearby and fell to his death.

''I think the casualty tried to get off fast and went for the most obvious route,'' he said. ''Unfortunately, the terrain where he was is worse than it looks on the map, with a lot of large crags.

''Sadly he went over one of these crags and fell 500 feet to his death.''