WALNUT CREEK (CBS SF) — A driver allegedly ran a red light Monday morning before he struck and killed a 56-year-old woman in Walnut Creek, according to police.

The collision occurred at 7:50 a.m. on eastbound Treat Boulevard at Candelero Drive, near the Pleasant Hill BART station, according to Walnut Creek police Lt. Lanny Edwards.

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The pedestrian, a Walnut Creek resident whose name is being withheld pending notification of next of kin, was taken to John Muir Medical Center in critical condition. She was pronounced dead at 9:15 a.m., police said.

Police said the driver, a 44-year-old man from Manteca, ran a red light before striking the woman as she used the crosswalk. The man then collided with another car, police said.

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The man, who was not injured, remained at the scene and is cooperating with the investigation, Edwards said.

There is no indication that drugs or alcohol were a factor in the collision, Edwards said.

Eastbound Treat Boulevard, a main thoroughfare in Walnut Creek, was closed from Cherry Lane to Bancroft Road until 1:05 p.m.

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