The Michigan facility where a hyperbaric chamber fire killed a 5-year-old child "held safety among their lowest considerations," the state attorney general said Tuesday, a day after four people were arrested in the boy's death. Thomas Cooper died Jan. 31 at the Oxford Center, an alternative medicine facility in the Detroit suburb of Troy that says it treats over 100 conditions, including Alzheimer's, autism and dyslexia. Those conditions are not cleared for hyperbaric oxygen therapy by the FDA, nor are the ones that a family attorney said Thomas' parents took him in for: sleep apnea and attention-deficit/hyperactivity disorder.