Mr . Cuomo has ordered an investigation into a bus accident that left 15 dead . He cited questions about how the bus driver got a commercial driver 's license . John Williams had served time for manslaughter and grand larceny , an official says . Police recovered a tractor-trailer that was traveling through the area at the time and interviewed its driver . He claims he swerved to avoid a tractor - trailer ; he has n't been charged .
Mr . Cuomo has ordered an investigation into a bus accident that left 15 dead . He cited questions about how the bus driver got a commercial driver 's license . John Williams had served time for manslaughter and grand larceny , an official says . He claims he swerved to avoid a tractor - trailer ; he has n't been charged .