Associated Press

PHOENIX — A Navajo Nation official says a police officer has died from health complications while driving a man he just arrested to a police substation in Dilkon.

Spokesman Deswood Tome says Officer Ernest Montoya likely suffered a heart attack while at the wheel of his vehicle on Sunday. Tome says the vehicle did not crash and the male prisoner was not injured.

Montoya is the second Navajo Nation officer to die while on duty in recent months. Officer Joseph Gregg was shot in the face on Oct. 11 at a home in Kaibeto (KY'-bih-toe).