The relatives of seven Canadians killed in a Thanksgiving Day crash say they were returning home after a trip to Mexico, where they went to sell some of their cars.

Canadian newspapers are reporting the family were Mennonites originally from a colony in Mexico who were now living in Alberta.

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The Colorado State Patrol says the accident happened at about 4:30 a.m. Thursday when their SUV veered into the median on Interstate 25 near Johnstown, about 40 miles north of Denver. Their vehicle plunged between 40 and 50 feet off the overpass and burned when it hit a concrete embankment.

Everyone in the car died on the scene.

Killed in the wreck were Jacob Rempel Sr., 42, his wife, Susana Rempel, 40 and their son, Jacob Rempel Jr., 16. The couple is survived by their five other children, according to the Calgary Herald.

Also killed were Jacob Rempel Sr.'s sister-in-law, Susana Rempel, 30, her two sons, Johan Rempel, 3, and Heinrich Rempel, 1, as well as family friend John Dick, 33.

The Calgary Herald reported the family had left Mexico on Wednesday and were driving through the night, with the adults taking turns behind the wheel.

Isaak Rempel, Jacob Sr.'s brother, told the Calgary Herald he regrets not going along on the trip with his wife, Susana. Isaak Rempel stayed with their three older children while his wife went to visit her parents with their two youngest sons because he couldn't get time off from work.

"We were really busy on the job and I said I will give her the money and she could go," he told the newspaper Friday.

"It feels pretty heavy and lonely," Elizabeth Neufeld, the sister of 30-year-old Susana Rempel, told the Edmonton Sun.

The coroner's office said weather was not a factor in the crash. An investigation continues.

The Edmonton Sun reported that family members are trying to raise money for relatives from Mexico to attend the funerals in Canada, which have not yet been arranged.