Alexandra Castello was traveling north in a Chevy Tahoe around 9:30 p.m. when she reportedly failed to stop at the intersection stop sign, Parsons said. Her vehicle collided with a Nissan Armada being driven by 38-year-old John Egger of Sonora. Kim Egger, 43, also of Sonora was a passenger in the Nissan.
Parsons said investigators believe Castello was using her cell phone at the time of the collision.
All three victims were taken to Memorial Hospital with varying injuries, he said.
The accident is still under investigations and no one has been cited for the collision, he said.
Costello is reportedly a senior at Tracy High School.
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