Police in a remote part of Canada have stepped up their manhunt for two Nazi-loving suspected teenage serial killers, one of whom might be wearing a disguise.

And they believe the pair got help from a resident who didn’t recognize them.

Fugitives Kam McLeod, 19 and Bryer Schmegelsky, 18, have led police on a 3,000-mile chase through some of the country’s roughest terrain after allegedly slaying botanist Leonard Dyck, 64, at a campground in northern British Columbia last week.

His charred body was found in a burnt van.

The Canadian men are also suspected of killing US citizen Chynna Deese, 24, and Australian tourist Lucas Fowler, 23, a couple murdered on a highway earlier this month.

The Royal Canadian Police said they’re conducting a “door-to-door” search for the suspects using tracker dogs, drones and other hi-tech equipment in the rugged countryside near Gillam, Manitoba, which is part of the Fox Lake Cree Nation reservation.

Their pursuit of the teens covered a vast area before their car was spotted near Gillam on Monday.

“We believe they are still in the area,” said a RCMP spokeswoman said.

The Canadian military is expected to join in the search, she said.

The fugitives were charged with second-degree murder in absentia last week in Dyck’s death.