police-light-bar1.jpgA 25-year-old motorcyclist who was killed in a crash Saturday morning has been identified as Constantine Boyko, according to the medical examiner’s office.

At 9:12 a.m. officers responded to an accident on Cesar Chavez Street between Evans Avenue and Pennsylvania St., police said.

Boyko, a San Francisco resident, was down on the street after apparently colliding with a van, police said.

According to investigators, Boyko was traveling east on Cesar Chavez when he collided with the van head-on, which was traveling in the opposite direction.

Boyko died at the scene.

The driver of the van stopped after the crash and cooperated with police.

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