• Kam McLeod and Bryer Schmegelsky sighted in Saskatchewan
• Australian and US citizen were found dead on remote highway

Two Canadian teenagers who were originally feared missing in northern British Columbia are now the subject of a national manhunt, as police continue to investigate the murders of the US citizen Chynna Deese, 24 and Australian Lucas Fowler, 23, on a remote highway.

The search for Kam McLeod and Bryer Schmegelsky, suspects in the double murder and in the death of a second unidentified man, is now focusing around the town of Gillam in northern Manitoba, the Royal Canadian Mounted Police (RCMP) said on Wednesday.

Police name Kam McLeod and Bryer Schmegelsky as suspects in murder of Lucas Fowler and Chynna Deese in British Columbia

Two teenagers who were previously feared missing have been named as suspects in the double murder of Australian Lucas Fowler, 23, and US citizen Chynna Deese, 24, who were shot dead on a remote highway in northern Canada.

Related: Three deaths and disappearance of two teenagers in Canada might be linked, say police

Case of dead man and murdered couple might be connected to missing pair who were also headed to Alaska on remote highway

Police in Canada are investigating three suspicious deaths and the disappearance of two teenagers which took place within days of each other along a remote Canadian highway.

At a press conference on Monday, representatives of the Royal Canadian Mounted Police said the two cases might be linked, despite earlier assurances that there was “nothing to indicate” that the double murder of Australian Lucas Fowler, 23, and US citizen Chynna Deese, 24, was related to the discovery of a burning car and a man’s body some 500km south, and the disappearance of two Canadian teenagers.