Hearing: Troy detective testifies in Oakland County hyperbaric chamber explosion case

Troy Detective Ryan Whiteside testified during the preliminary hearing for the four workers charged after a 5-year-old boy was killed in a hyperbaric chamber explosion at a health care facility in Oakland County. Tamela Peterson, 58, of Brighton, Jeffrey Mosteller, 65, of Clinton Township, Gary Marken, 66, of Spring Arbor and Aleta Moffitt, 60, of Rochester Hills, were charged after Thomas Cooper was killed when the hyperbaric chamber he was receiving treatment in exploded at the Oxford Center in Troy on Jan. 31, 2025. The boy’s mother was also injured in the explosion. Whiteside testified Tuesday, Dec. 2, 2025, about collecting and reviewing video footage of the treatments Cooper received at the facility. The preliminary hearing is expected to continue on Dec. 12, 2025.