A former safety manager is sentenced to about 19 months in prison for his role in the death of a five-year-old boy who dies in a fire and explosion inside a hyperbaric oxygen chamber. The sentence follows criminal proceedings tied to the incident.
Multiple outlets report the defendant, Jeffrey Mosteller, is connected to the safety oversight of the chamber involved in the January 2025 incident in Michigan. NBC News and The Guardian describe a conviction or plea outcome in which Mosteller enters a plea related to involuntary manslaughter and is sentenced to a term of more than a year. The outlets refer to the boy’s fatal injuries occurring during a fiery explosion in the chamber.
While the reporting differs mainly in phrasing and emphasis, both sources agree on the core facts: the death involves a five-year-old patient, the incident occurs in a hyperbaric oxygen chamber, and Mosteller is sentenced to a prison term after resolving the case through a plea rather than a full trial.
