Two South Carolina teenagers are charged with murder in the shooting death of a good Samaritan who helped them pull an SUV out of a ditch.

North Charleston police spokesman Spencer Pryor tells local news outlets the victim stopped to help the teens pull the vehicle out of a ditch about 11 p.m. Monday and was robbed and shot after the vehicle was freed. The name of the victim, who died at the scene, was not immediately released.

Pryor says 17-year-old Deon Antonio Frasier and 19-year-old Michael Odell Anthony Dupree-Tyler, both of North Charleston, are charged with murder. Frasier is also charged with possession of a firearm during a violent crime.

It was not immediately known if they had attorneys.

It was the 21st homicide in North Charleston this year.