WALNUT PARK (CBS) — Authorities are looking for a second suspect in a murder outside a Chuck E Cheese restaurant.

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Robert Herrera is accused of fatally shooting a man after a dispute over a parking space outside the Walnut Park restaurant.

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Detectives say Herrera’s sister was with him at the time. She was arrested Wednesday night.

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If you have any information about Herrera’s whereabouts, contact the Los Angeles County Sheriff’s Department.