A 21-year-old girl was killed while crossing near Baseline and 19th Avenue on Saturday night.
Phoenix police Sgt. Steve Martos says Alexandra Morales died after she was struck by possibly two vehicle around 6 p.m.
He says one vehicle remained at the scene and the driver wasn't impaired.
According to witnesses, there was another vehicle that was possibly involved, but it's unknown if this vehicle also hit the woman.
Martos says they would like to find the vehicle and ask the driver some questions.
Detectives are also looking into the possibility that the woman suffered a medical event before she was hit.
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