Two Canadian teenagers thought to be on the run are now the main suspects in the double murder of a young couple.A burnt-out camper van belonging to the lifelong friends - Kam McLeod, 19, and Bryer Schmegelsky, 18 - was discovered on Friday along the highway in northern British Columbia.
Days before, two tourists were found shot to death 500km (310 miles) away.
Police say Mr McLeod and Mr Schmegelsky have since been spotted driving out of the province and are now suspects.
They were previously described by police as missing, with the implication that they may also be victims of the killer.
A third unidentified body was found near the young men's burnt out van.
Who was murdered?Australian Lucas Fowler, 23, and American Chynna Deese, 24 were on a two-week-long road trip across Canada, where Lucas Fowler had been working.
The couple were found shot dead on the side of the Alaska highway 20km (12 miles) south of Liard Hot Springs - a popular tourist spot.
Police believe they were killed on the night of 14 July.
Their 1986 blue Chevrolet minivan was found near their bodies, and eyewitnesses told media they had earlier seen the pair on the side of the road when their van had broken down.