By Anna Claire Vollers, Stateline.org

Just before 8 a.m. on Jan. 31, an explosion rocked a nondescript one-story office building in an affluent suburb of Detroit.

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The building was home to The Oxford Center, a health clinic that provided hyperbaric oxygen therapy to treat a variety of disorders.

Inside the clinic, a spark had ignited the high-pressure, pure-oxygen atmosphere in a hyperbaric chamber where 5-year-old Thomas Cooper lay with a pillow and blanket, receiving treatment for ADHD and sleep apnea. A fireball consumed the inside of the chamber in seconds, killing the boy, law enforcement later said.

His mother suffered third-degree burns on her arms as she tried to free her son.

Within weeks of the tragedy, Michigan Democratic Attorney General Dana Nessel charge

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