Parents and dog die in rollover crash after driver falls asleep at the wheel, children hospitalized

BOULDER, Colo. (KRDO) - Colorado State Patrol (CSP) says two people and a dog have died after a rollover crash on Highway 36.
CSP says their Jeep was heading north when it drove through the center grass median, rolled, and entered into the southbound lanes.
They say the adult female passenger was not wearing a seatbelt. Both were from Castle Rock and are now deceased.
In an original release from Jan. 1, CSP said "Troopers have determined the driver of the crash was asleep at the wheel, causing the crash."
On Jan. 8, CSP released a correction stating "Initial information at the scene indicated fatigue may have been a contributing factor. However, no definitive cause has been determined, and the case remains under investigation," later adding, "We apologize to the family and friends of those impacted by the incorrect statement about the crash's cause."
The dog was transported to a vet but had to be put down due to its injuries, according to CSP.
According to CSP, their children, ages 11 and 16, survived the crash but were transported to the hospital.