Four people charged in death of five-year-old boy killed in horrific hyperbaric chamber explosion

Four people have been charged in connection to the death of a five-year-old boy who was killed when his hyperbaric chamber exploded. The state attorney general has charged four employees from the center in connection to Thomas' death, claiming they 'held safety among their lowest considerations.' Thomas Cooper, 5, died when the pressurized oxygen chamber he was inside at a Michigan medical facility burst into flames on January 31 The state attorney general has charged four employees from the center in connection to Thomas' death The family's attorney said the boy received multiple sessions for sleep apnea and attention-deficit/hyperactivity disorder Each was arrested Monday and handcuffed at their waists as they entered not guilty pleas Tuesday before Troy District Court Magistrate Elizabeth Chiappelli. NBC News reported the family's attorney said the boy received multiple sessions for sleep apnea and attention-deficit/hyperactivity disorder. The center's founder and chief executive, Tamela Peterson, 58, is charged with second-degree murder Oakland County Fire Department arrived minutes after the 911, but the boy was already dead.