Updated

Two brothers are set to be arraigned in a Central California courtroom on murder charges in the death of a Good Samaritan who was run over after trying to rescue a woman who was being assaulted.

The Fresno Bee reports (http://bit.ly/1kAoMi2 ) that 18-year-old twin brothers Gerald and Jared Smith were scheduled to be in court Tuesday.

Police say the brothers were assaulting a 35-year-old woman at a Fresno gas station last week when 49-year-old Nathan Halsted rode by on a bicycle and tried to help.

Police say a surveillance camera captured the brothers as they punched, kicked and stomped on Halsted, leaving him in the street, where a driver fatally struck him.

The boys' mother, Lou Ann Smith, has said her sons were the ones attacked.