Authorities say a wrong-way vehicle collided with other vehicles on Interstate 40 in Flagstaff, killing the wrong-way driver and injuring three other people.
Arizona Department of Public Safety spokesman Quentin Mehr says the wrecks occurred early Tuesday morning as a pickup was going westbound in eastbound lanes of I-40.
Mehr says the pickup collided head-on with a passenger vehicle and then was struck by a commercial ruck that went through a guardrail and down a short embankment.
Mehr says another vehicle then struck debris from the previous collisions.
Mehr says the male wrong-way driver was dead at the scene and that there's no immediate indication that the other people's injuries are life-threatening.
Identities weren't released.
Eastbound I-40 reopened after three hours. Traffic was diverted onto local streets during the closure.