A tractor trailer driven by Noe Gamez-Ruiz crossed the solid white line on the side of the interstate, hitting Donahue, who died at the scene.
A warrant for Gamez-Ruiz’s arrest says there are videos from Gamez-Ruiz’s truck and Donahue’s vehicle that show the crash.
Gamez-Ruiz is being charged with failure to yield the right away to a stationary emergency vehicle and careless driving causing death. In court Monday, Gamez-Ruiz was given his next court date -- in January.
This incident is Gamez-Ruiz only arrest in the state, according to Colorado Bureau Investigation records.
Originally from North Dakota, Donahue had been with the force for 11 years and was stationed at the Castle Rock office. He was a husband and father to two young daughters.
His obituary states that he was "extremely hard working, honorable, and genuinely kind. He was so honest he even
gave his own wife a ticket." Donahue was called a gentle giant who loved children and helping others.