Diana Hersevoort

Pleasanton 18-Year-Old's Twitter Boasts Lead To Murder Charge In Death Of CyclistAn 18-year-old accused of killing a bicyclist with his car has had a vehicular manslaughter charge upgraded to murder in part because he boasted about speeding on Twitter, prosecutors said Thursday.
Coroner IDs Bicyclist Killed Riding With Her Husband In Pleasanton A woman who was killed when a car struck her while she was riding her bicycle in Pleasanton Sunday afternoon has been identified by the Alameda County coroner's bureau as 58-year-old Diana Hersevoort.