Ireland said the investigation is now focused on the portable oxygen tank and the regulator. How either of these devices ignited is still unknown. Investigators were able to talk to paramedic Jeff ...

Investigators have now narrowed down what may have sparked the flame in a deadly ambulance fire last month to a portable oxygen tank and regulator. Investigators determined it was an accident and ...

He also said that the investigation is centering on the portable oxygen cylinder and the regulator mechanism as the possible source of the fire. The precise cause of the fire within the regulator ...

An investigation has found that an ambulance fire that killed a patient and critically injured a paramedic last year originated in a portable oxygen ... report said oxygen regulator fires are ...