A black woman who watched a white mob kill her sister during race riots nearly a half-century ago in Pennsylvania has died.

Hattie Dickson had to wait over 30 years for justice. A funeral home says she died Monday at York Hospital. She was 70.

Dickson was driving when a mob of armed white youths confronted her family in York in July 1969. Her 27-year-old sister, Lillie Belle Allen, was shot when she got out of the car to take the wheel from Dickson after their car got stuck at a railroad crossing.

Allen's killing went unpunished until prosecutors reopened the case in 1999.

Eventually, 10 white men were charged. Two were convicted and seven pleaded guilty or no contest. One, the mayor at the time of the prosecution, was acquitted.