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.

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.

Tamela Peterson, owner and founder of the Oxford Center, was given a $2 million bond. Three other employees also charged.

Troy police say Tamela Peterson ran away when asked for her cellphone after Thomas Cooper died in a hyperbaric chamber fire at the Oxford Center.

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.

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.

The facility where a hyperbaric chamber fire killed a 5-year-old child “held safety among their lowest considerations,” the Michigan attorney general said.

A hyperbaric chamber in Michigan exploded in January, killing a 5-year-old boy. Now, four people are facing charges related to the child's death. The Troy Police Department arrested four people on March 10 in connection with the chamber explosion at The Oxford Center,