New details have come out after four people were charged in connection with the death of a 5-year-old Michigan boy who was killed in a hyperbaric chamber explosion.

Three people have been charged with second-degree murder after a 5-year-old boy was killed when a hyperbaric chamber exploded at a medical facility in Michigan earlier this year, officials announced Tuesday.

Four people have been charged in the death of a 5-year-old boy who was killed inside a pressurized oxygen chamber that exploded at a suburban Detroit medical facility.