Ambulance fire likely caused by oxygen tank, regulator by: Elizabeth 'Ufi, Manolo Morales. Posted: Sep 14, 2022 / 11:44 AM HST. Updated: Sep 14, 2022 / 06:58 PM HST.

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 ...