A motorcyclist killed in a head-on collision on Cesar Chavez Street Saturday morning was identified Sunday by the Medical Examiner’s Office as 25-year-old Constantine Boyko, of San Francisco.
Boyko had been riding eastbound on Cesar Chavez between Evans and Pennsylvania avenues, an industrial area at the southern border of the Potrero Hill neighborhood, when he collided head on with a van traveling westbound, according to police.
Police responded to the area at about 9:10 a.m. and found Boyko on the ground, police spokesman Officer Albie Esparza said. He was pronounced dead at the scene.
The driver of the van stopped and cooperated with police in the investigation, Esparza said.