A tiny Canadian village remains in lockdown today after two men, who are suspected to be fugitive teenage serial killers, were spotted foraging for food at a landfill.

Native American volunteers spotted the men as part of a week-long manhunt for Kam McLeod, 19, and Bryer Schmegelsky, 18.

Authorities say they believe the two are behind the killings of 23-year-old Australian Lucas Fowler and his 24-year-old American girlfriend, Chynna Deese, who were were found dead on the side of a highway 1,800 miles away in Canada's west on July 15.

Four days later and 292 miles away they allegedly killed University of British Columbia botanist Leonard Dyck. His body was found dead on another highway.

The days-long manhunt, which has crossed half the country, shifted to the area of York Landing, Manitoba,yesterday - about 1,900 miles km from the crime scenes in British Columbia.

The duo were reportedly spotted by members of the Bear Clan Patrol at a landfill, sparking the mass police presence in York Landing - a village with a population of just 443.

Today, Royal Canadian Mounted Police in Manitoba - who had earlier warned of polar bears in the area they were searching - said the 'situation is ongoing'. And claimed 'all possible resources' were being used to apprehend the two suspects.

Police had been concentrating their search in recent days in the harsh terrain in the Gillam, Manitoba, area, more than 620 miles north of Winnipeg, deploying drones, dogs and military help before shifting focus to the village.

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Still on the run: Kam McLeod and