RIVERTON, Wyo. (AP) — Officials say the driver who died in a two-vehicle crash in Fremont County that killed two others had consumed 10 times the impaired driving limit for cannabis.

Darion Wheeler, 18, was headed north in an SUV on Highway 789 when he failed to negotiate a left-hand curve and overcorrected. The SUV spun counter-clockwise and entered the southbound lanes where it collided with a pickup truck.

Wheeler and his two passengers -- his 15-year-old sister, Destinee Wheeler, and 20-year-old Paul McEwan -- all died in last month's crash north of Lander.

The pickup truck driver is recovering from his injuries.

Coroner Mark Stratmoen says toxicology reports indicate Wheeler consumed marijuana immediately before or while he was driving.

He found that drug use was directly related to the teen's death.