NISKU, Alberta (AP) — Canadian Mounties found five people naked after a bizarre car wreck on a rural road.

Royal Canadian Mounted Police Cpl. Laurel Scott says officers responded to the report Monday morning of a car colliding with a truck in Nisku, a few miles south of the Edmonton beltway.

When they arrived, they found that five people in the car were naked — four women and one man. All were taken to a hospital with undisclosed injuries.

Scott said Tuesday the five were arrested. She said she’s not sure of the charges, though police consider it a “purposeful collision.”

She called the incident “very bizarre” and said, “We are trying to sort through all the different information we have so we can figure out from start to finish what this incident is all about.”

Police said earlier they believe drugs or alcohol may have been a factor.

The collision occurred on a snow-covered two-lane road in an area of petroleum drilling outfits and other industrial businesses.