The murder trial of a man accused of killing a San Francisco police officer while fleeing several robberies in a stolen van four years ago got under way this morning in San Francisco Superior Court. On July 26, 2006, Steven Petrilli was allegedly driving a stolen silver van being chased by police after four robberies earlier that night when he ran a stop sign in the city's Portola District and crashed into Officer Nick-Tomasito Birco's patrol car. Read More