Eric Jensen, mechanic for MotoAmerica Stock 1000 racer Roi Holster of Napa Valley Racing, was killed Wednesday, September 18 near Napa, California, when he was involved in a traffic collision with a truck while riding his motorcycle, according to a local news report citing the California Highway Patrol as a source.

According to the report, Jensen was 39 and a resident of Napa.

Holster informed Roadracingworld.com of Jensen’s passing Thursday at Barber Motorsports Park ahead of this coming weekend’s MotoAmerica season finale. It was planned to be Holster’s last professional race event before he retires, he said.

Holster posted the following Thursday night on his Facebook page:

“It is with a heavy heart that I found out this morning that my friend, crew member, mechanic and always there for me died in a motorcycle accident last night. We were all set for what was to be our last race get together with the whole crew when he did not make his flight. I am at a loss of words and he will be dearly missed. He loved being here in the pro paddock and loved motorcycles and what we do. God Speed Eric Jensen we love you and are going to miss you”