CALGARY - Police are asking for the public's help in Alberta and Saskatchewan in the killing of four people last month near Calgary.

The remains of Glynnis Fox, who was 36, her sister Tiffany Ear, who was 39, and 25-year-old Cody Pfeiffer were found in a burned-out car at a Calgary construction site on July 10.

Hanock Afowerk, who was 26 and the car's owner, was found dead near Highway 22 and Highway 8 west of Calgary two days later.

Police are asking motorists who were in that area between midnight and 6 a.m. on July 12 and who have a dashcam that has footage of the route to come forward.

They also are asking people in the Moose Jaw, Sask., area to contact them if they find discarded clothing, specifically shirts, pants, shoes, documents or any other materials that may have been burned.

It is believed that these items may be near Canadian Forces Base Moose Jaw or the Moose Jaw municipal airfield.