San Bernardino County prosecutors have charged a 20-year-old man with murdering a California Highway Patrol motorcycle officer who collided with a truck while pursuing him.

District Attorney Michael A. Ramos said Monday that the charge against Richard Perez of Redlands is justified because there was a flagrant disregard for human life as Perez drove dangerously at excessive speed.

Thirty-three-year-old CHP Officer Tom Coleman of Fontana died June 11 after the collision with a big-rig in Redlands.

Perez was scheduled for arraignment Monday afternoon in San Bernardino.