At trial, Bilodeau and his son Joseph — just 16 at the time — said they worried the occupants of the truck were thieves. They chased the vehicle in Roger Bilodeau’s truck, reaching speeds of 152 km/h. Roger Bilodeau called his older son Anthony Bilodeau and told him to bring a gun.
The chase ended at a crossroad when Roger Bilodeau boxed in Sansom’s vehicle. Anthony Bilodeau arrived and within seconds shot Sansom and Cardinal, leaving their bodies on the roadway.
Anthony Bilodeau later destroyed the rifle and altered the appearance of his truck, which was caught on security footage on a nearby oil and gas facility. Both father and son lied about their involvement in the shooting.