(CBS/AP) PHOENIX - Phoenix police say an 8-year-old boy was driving his mother's car on a nighttime joyride with his 6-year-old sister when it crashed into a pole, fatally injuring the girl.
Sgt. Steve Martos said Thursday the girl and her brother, who received minor injuries in the crash, were both in their pajamas.
The children's mother had put them to bed and then couldn't find them in their home a half-hour later.
The frantic mother went door-to-door in the neighborhood and called police to report her children may have been kidnapped.
According to CBS affiliate KPHO, the accident occurred within walking distance from the home. While looking for her children, the mother reportedly approached the scene and discovered that they were the ones involved in the crash.
The station reports police received numerous 911 calls including one about a hit-and-run where a car struck a fence then kept going, and another where the caller reported seeing children driving the car, a 2010 Hyundai Elantra.
Two responding patrol officers spotted the vehicle that crashed "almost instantly" after police turned on their emergency lights, police Sgt. Steve Martos said.
When they tried to pull it over, the driver veered to the right and collided with a pole.
From what police have pieced together, it appeared the children drove south about three miles from their home and then backtracked, Martos said.
Martos said there was no immediate indication that police officers did anything wrong.