Police in Michigan have arrested four people after a 5-year-old boy receiving treatment at The Oxford Center died when the hyperbaric chamber he was in exploded.

Four people have been arrested after a boy, 5, died in a hyperbaric chamber explosion on Jan. 31, it's been reported.

The child who died in the Jan. 31 hyperbaric oxygen chamber fire was 5-year-old Thomas Cooper, of Royal Oak. He was trapped in the chamber when it caught fire, the family's attorney says.

Thomas Cooper was pronounced dead at the scene on Jan. 31 at the Oxford Center in Troy. His mother suffered burn wounds as she tried to save her boy.

Allegedly, neither a medical doctor nor a safety supervisor was at the medical facility when the chamber exploded.

The Michigan attorney general has accused the owner of a medical center and three of its employees of ignoring safety standards to make a profit.

Michigan Attorney General Dana Nessel has charged four people in connection with the death of a 5-year-old boy who was killed in a hyperbaric chamber explosion.