CHATTANOOGA, Tenn. (AP) - A preliminary report says federal transportation safety officials are still investigating what caused a Chattanooga school bus crash that killed six students.
The National Transportation Safety Board report released Tuesday says on Nov. 21, a 24-year-old driver was bringing 37 elementary students home when the bus left the curvy road, hit a utility pole, overturned and hit a tree, collapsing the roof. The NTSB says the driver left his normal route.
Driver Johnthony Walker faces vehicular homicide charges.
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Police estimate Walker drove 48 to 52 miles per hour in a 30 mile-per-hour zone.
It says Walker, who worked for contractor Durham School Services, had one reportable and one non-reportable crash since August 2016 driving school buses.
The NTSB says the investigation continues to determine probable cause and issue safety recommendations.
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