The Royal Canadian Mounted Police said that 23-year-old Australian Lucas Fowler, and his American girlfriend Chynna Deese, 24, were shot to death before their bodies were discovered on the side of the Alaska Highway near Liard Hot Springs on July 15. The couple is believed to have been killed that day or the day prior.

The RCMP also released a composite sketch of a man (below) who was seen talking to the couple in the evening of July 14 along Highway 97, the road where the couple’s bodies would be discovered the next day. The man is described as having darker skin with dark hair, standing shorter than 6ft 3in Lucas, with a possible beard or glasses. He was also driving an older model Jeep Grand Cherokee with a black stripe on the hood.