MAYS LANDING, N.J. — Authorities say a New Jersey man has admitted causing the death of a good Samaritan who tried to help a woman he was beating at a bus stop.

The attack occurred last November along Route 40 in Mays Landing.

Atlantic County prosecutors say 54-year-old John Charlton was driving by when he saw 24-year-old Calvin Wiggins assaulting a woman, with whom Wiggins apparently had a relationship. Charlton tried to stop the attack but was punched by Wiggins, causing Charlton to hit his head on the roadway.

Charlton was taken to a hospital, and died from his injuries 10 days later.

Wiggins pleaded guilty Friday to aggravated manslaughter. The Mays Landing man is expected to receive a 13-year state prison term when he's sentenced Aug. 17.