The incident happened last week in an industrial area near Miguel Bustamante Parkway and South Riverside Avenue. Emergency crews rushed to the scene to find a truck carrying compressed hydrogen fuel tanks engulfed in flames.
1 dead, 1 other injured after hydrogen truck explosion in Colton
Police dashcam footage show the tanks exploding as firefighters worked to contain the fire.
One person was killed and another suffered severe burns.
Pilot, the company that operates the trucks, released a statement pledging to cooperate with the investigation.