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A man riding an electric scooter has died after being struck by a car in Chula Vista.

Police Lt. Rusty Rea said the driver of the car stayed at the scene and was upset after the accident that happened around 4 a.m. Saturday.

Rea said investigators have not determined who was at fault and no charges are pending. He says the man who rode a Bird electric scooter has not been identified.

Meanwhile, police in San Diego said a woman crashed while riding a Bird electric scooter in the city’s Hillcrest neighborhood and suffered a life-threatening head injury.

Officer Robert Heims said the woman flipped and hit her head late Friday. She was taken to the hospital and her injury was considered life-threatening.