The incident was reported around 12:30 a.m. on northbound Interstate 680 just south of the Treat Boulevard off-ramp.

Walnut Creek, CA. – One person was injured in a traffic collision that happened early Friday morning in Walnut Creek, the California Highway Patrol said.
The incident was reported around 12:30 a.m. on northbound Interstate 680 just south of the Treat Boulevard off-ramp.
A blue Honda Civic and a gray Toyota Corolla were involved in the crash.
One person suffered minor injuries in the accident. The patient was taken to the hospital for treatment.
CHP officers are investigating to determine the collision.