The husband of a woman killed trying to stop a gas-and-dash in Calgary has died in a crash while driving from Vancouver for the two-year anniversary of her death.

Ahmad Nourani Shallo was travelling to Calgary from his home in Vancouver with his son Koorosh and his new wife on Thursday when they crashed on the Trans-Canada Highway near Golden, B.C.

They were on their way to Calgary for the two-year anniversary of the death of Maryam Rashidi, who was killed when she tried to stop a gas theft of $113 at a Centex station in June 2015.

Koorosh was asleep in the backseat of the car and suffered minor injuries.

Shallo's new wife was taken to hospital where she has undergone surgery for broken bones and is expected to recover.

"Everyone is shocked, we're all devastated, we can't believe this," family friend Ehsan Hosseini told CBC News.

Shallo's parents have flown to Canada from Iran.

Joshua Mitchell was charged with second-degree murder and was later convicted of manslaughter. He will be sentenced on Aug. 30. 

Rashidi took the job at the Centex station after she and Shallo were laid off from their jobs as engineers in Calgary's oil and gas industry.

The couple had moved to Canada from Iran just four months earlier.

Shallo moved to Vancouver soon after Rashidi was killed.