Gov. Philip D. Murphy of New Jersey asked people to “please pray” for the officers, who were shot around 6:30 p.m. Friday.

A 14-year-old shot and killed a police officer and wounded another Friday evening in New Jersey, authorities said, in a chaotic scene that witnesses described as seeing officers running down a busy street before they heard a volley of a dozen or more gunshots.

One Newark police officer was killed and another is “fighting for his life” in critical condition after a shootout with a 14-year-old suspect Friday evening.