A vehicle rollover early Monday morning in southwest Yukon has cost a Whitehorse man his life.

Donald Tomlin, 46, was driving north on the Alaska Highway near Silver City when he lost control of his truck.

Around Kilometre 1,693 of the highway, Tomlin's vehicle went into the north ditch and rolled once or twice, police said today.

Haines Junction RCMP and Destruction Bay ambulance services attended the scene of the rollover at around 1:40 a.m. after a report from a passing motorist, according to Const. David Morin.

He estimated the rollover likely occurred about half an hour before police arrived, at approximately 1:10 a.m.

Tomlin, who was the alone in his 1991 Chevrolet Silverado, was not wearing a seat belt when the truck went off the road.

He was ejected from his vehicle and died at the scene as a result of injuries sustained during the accident, police reports say.

Alcohol and speed have both been ruled out as possible causes for the accident, as has inclement weather, Morin said in an interview today.

Fatigue is a possible factor, Morin added.

Tomlin was a longtime employee of the territorial Department of Highways and Public Works, working as an engineering technician for the transportation engineering branch.

He moved from the federal to the territorial government in 1992 during the devolution of the Alaska Highway, according to transportation engineering director Robin Walsh.

'(Tomlin) was a quiet, diligent guy who always got the job done,' Walsh said in an interview today. '(He) was a very experienced surveyor . . . . He was one of the best that there is.'

One of Tomlin's long-term projects included the Shakwak project, which involved improvements to the Alaska Highway north of Haines Junction to the Alaska border.

'He's spent many years working on the Shakwak project. From the early days to the present.' Walsh said.

'There were many difficult surveying challenges on the various Shakwak projects and he rose to every challenge that was presented to him.'

Tomlin had recently been working on the reconstruction project west of Sheep Mountain.

He was driving his vehicle back to work when it rolled, Walsh said.

'I think that people are in a state of shock to a certain extent, just realizing that somebody they worked so closely with for so many years could be involved in such a tragic accident like this.

'We're sadly missing him here.'