LAFAYETTE — Harold Thibeaux, the Lafayette Parish school bus driver involved in the fatal March 14 accident that killed 6-year-old La’Derion Miller, has announced his retirement.

His retirement ended his 23-year career as a bus driver and preempted School Board action on a recommendation that he be fired.

School Board attorney James Simon said Thibeaux turned in his retirement package at 3:15 p.m. Wednesday — prior to his scheduled 3:30 p.m. termination hearing.

La’Derion was a kindergarten student at Milton Elementary who died from injuries he suffered after being dragged 20 feet by Thibeaux’s bus and then partially crushed by the front wheels.

Thibeaux told investigators he was distracted by another child while La’Derion and his cousin attempted to board the bus that morning, according to the accident report.

Investigators are still unsure how La’Derion became caught on the outside of the bus. He was taken by helicopter to nearby Women’s & Children’s Hospital where he died.

His parents have filed separate wrongful death lawsuits that are pending in district court. Thibeaux has not been charged or cited in the incident. His blood alcohol level tested zero and investigators found no evidence of traffic or criminal violations.