A hyperbaric chamber at the Troy facility caught fire and exploded while Cooper was undergoing treatment back in January 2025.

In exchange for the plea, Gary Mosteller had his charge of second-degree murder dropped by the prosecutor's office.

Jeffrey Mosteller, the safety director at the Oxford Center in Troy, Michigan, pleaded no contest to one count of involuntary manslaughter on Tuesday following the death of a 5-year-old boy in a ...

Three others still facing charges are set to appear in court in the coming days.

One of the four people charged after a 5-year-old boy was killed in a hyperbaric chamber explosion at an Oakland County health care facility in January 2025 has pleaded no contest. Tamela Peterson, 59 ...

Oxford Center CEO Tamela Peterson was ordered to stand trial on both second-degree murder and involuntary manslaughter charges, along with two other employees.

Jeffrey Mosteller, safety director at the Oxford Center in Troy, will be sentenced Aug. 31.

Add Yahoo as a preferred source to see more of our stories on Google. Michigan's attorney general announced that the safety director in charge of a facility where a pressurized oxygen chamber exploded ...

Jeffrey Mosteller, safety director at the Oxford Center in Troy, pleaded no contest to involuntary manslaughter in connection with a hyperbaric chamber explosion that killed 5-year-old Thomas Cooper ...