State Trooper Ambushed by Motorist, Good Samaritan Fatally Shoots Suspect

January 12, 2017 Updated: January 12, 2017

The Arizona Department of Public Safety says a trooper shot and wounded along Interstate 10 west of Phoenix was “ambushed” by a suspect who then fought with the trooper before being fatally shot by a driver who stopped to help, AP reported.

Officials say the incident happened early Thursday morning at the scene of a roll-over wreck from which a female of unknown age was ejected and fatally injured.

No identities were released but officials say the trooper is a 27-year-long veteran who has a severe gunshot wound in his shoulder-upper chest area.

Officials say the trooper spotted the roll-over wreck as he responded to a motorist’s report of shots being fired at the motorist’s vehicle, which was not the roll-over vehicle.

They don’t know a possible motive for the attack on the trooper.

According to ABC15, a Good Samaritan saw the fight and told the suspect to stop attacking the officer. Then, he went into his car and grabbed a gun and fatally shot the suspect.

“Thank you because I don’t know if my trooper would be alive today without your assistance,” DPS Col. Frank Milstead was quoted as saying by ABC15.

The incident is still under investigation.

The Arizona Department of Public Safety says the I-10 closure is expected to last for some time, Fox10 reported. It’s calling on motorists to avoid the area if possible.

The Associated Press contributed to this report.