MORRISON, Colo. (CBS4) – A 16-year-old boy from Centennial was killed late Wednesday night when the vehicle he driving flipped over on Highway 285.

(credit: CBS)

Riley Short was with four other juveniles when the SUV was allegedly speeding and rolled over near Morrison. The wreck happened after 10 p.m. between Parmalee Gulch Road and Highway 8 and led to a full closure of the highway.

Short was killed after being ejected but none of the other people in the SUV required hospitalization.

(credit: CBS)

Morrison police said they were investigating whether marijuana played a role in the crash. They said some of the passengers were using the drug beforehand.

(credit: CBS)

The Jefferson County Coroner said an autopsy will be performed as part of the investigation and toxicology tests will determine whether the driver was under the influence.