A fire and explosion at a lumber mill in Maine kills a third person, as the co-owner later dies from injuries sustained during the incident. Reports from multiple outlets say the co-owner’s death increases the confirmed fatalities to three. The earlier deaths were tied to the same event at the mill, though further details about victims and circumstances are not consistently specified in the available accounts. Emergency response crews respond to the fire and blast at the facility, and investigators are working to determine what caused the incident and how it spread. The death of the co-owner follows reports that other individuals were killed at the scene or later succumbed to injuries. Authorities continue to assess damage to the mill and to examine the sequence of events, including whether equipment, operations, or safety procedures contributed to the explosion and fire. The affected facility is described as a lumber mill, and the investigation remains ongoing. The reports do not indicate any additional fatalities beyond the three confirmed deaths.