4 Charged in Fatal Oakland County Hyperbaric Chamber Blast

Prosecutors argue more safety steps could have prevented the tragedy.

Published on Feb. 10, 2026

The owner and three employees of an Oakland County medical center where a 5-year-old boy died in a hyperbaric chamber explosion will stand trial, the Michigan Attorney General's Office announced. The boy's mother was also injured in the blast at the Oxford Center in Troy.

Why it matters

This case highlights the importance of proper safety protocols and oversight in medical facilities, especially when dealing with potentially dangerous equipment like hyperbaric chambers. The tragedy raises questions about the treatment of children and the responsibility of medical professionals.

The details

Prosecutors argue that more safety steps, such as using grounding straps to prevent sparks, could have prevented the explosion. They say the medical facility's officials ignored daily maintenance checks, annual safety inspections, and did not have a medical doctor or safety supervisor on site when the 5-year-old boy was undergoing treatment by a non-licensed technician. The boy was being treated for sleep apnea and attention-deficit/hyperactivity disorder, which prosecutors say are not approved conditions for hyperbaric oxygen therapy.

  • In January 2025, officials said 5-year-old Thomas Cooper was inside a hyperbaric chamber that exploded while receiving treatment at the Oxford Center in Troy.
  • A pretrial date has not been set.

The players

Tamela Peterson

The 58-year-old owner of the Oxford Center in Troy.

Jeffrey Mosteller

The 64-year-old safety manager at the Oxford Center.

Gary Marken

The 65-year-old assistant at the Oxford Center.

Aleta Moffitt

The 60-year-old operator of the hyperbaric chamber at the Oxford Center.

Thomas Cooper

The 5-year-old boy who died in the hyperbaric chamber explosion.

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What they’re saying

“When professionals entrusted with the care of our children abandon the standards meant to keep them safe, they must be held accountable. I am relieved that this case will proceed to trial, where we will continue to pursue justice for Thomas and his family.”

— Dana Nessel, Michigan Attorney General (Patch)

What’s next

A pretrial date has not been set, but the case will proceed to trial where prosecutors will continue to pursue justice for Thomas Cooper and his family.

The takeaway

This tragic incident highlights the critical importance of strict safety protocols and oversight in medical facilities, especially when dealing with potentially dangerous equipment. It serves as a sobering reminder that medical professionals have a duty of care to their patients, and any failure to uphold safety standards can have devastating consequences.