CASTLE ROCK, Colo. -- A man has been arrested and charged after he fatally struck Colorado State Patrol trooper Cody Donahue on Interstate 25 south of Castle Rock on Friday.
Authorities arrested 41-year-old Noe Gamez-Ruiz of Denver. He was arrested shortly after the crash.
Gamez-Ruiz posted bond early Saturday morning and is no longer in custody, officials said.
Authorities have charged him with careless driving resulting in death and failure to yield the right-of-way to an emergency vehicle.
Officials said Gamez-Ruiz was driving a commercial truck belonging to U.S. Foods when he fatally struck Donahue on Friday.
The Douglas County Sheriff's Office said Donahue was outside of his vehicle and wearing a reflective green safety vest when he was hit.
"Our hearts go out to the family of Trooper Donahue and to the Colorado State Patrol," the sheriff's office said in a statement. "This is a tragic and avoidable crime. We would like to remind drivers that if you see an officer on the side of the road please slow down and move at least one lane away from the officer, if possible. This is Colorado state law.
"The Douglas County Sheriff’s Office would like to thank all of the surrounding emergency responders for their assistance in this unfortunate incident."
Donahue was a father of two and was an 11-year-veteran of the Colorado State Patrol. A GoFundMe account has been setup to help his family.
The investigation is ongoing.