A stranger saved the life of an Arizona State Trooper on Thursday after the law enforcement officer was shot during a traffic stop near Phoenix, according to reports published Friday evening.

Brian Schober, who drove up on the scene following the incident, said he pulled over to the side of Interstate-10 when he saw three bodies. Schober was flagged down by a motorist who had fatally shot another person who had just shot Trooper Edward Andersson.