A man is dead after he was struck by at least one vehicle while walking on a San Francisco stretch of freeway Wednesday evening.

According to KRON4, at 10:54 p.m. Wednesday the California Highway patrol started getting calls of a man walking in the northbound lanes of 280 near the Monterey Boulevard onramp.

Moments before CHP officers arrived, the man was struck by the driver of a car. His injuries were fatal, and he was pronounced dead at the scene.

The CHP closed three lanes of 280 until concluding their investigation at 1:53 this morning.

As of publication time, the San Francisco Medical Examiner's Office had not publicly identified the man. According to a CHP spokesperson, it's still unclear why he was walking on 280.