Springfield fire investigators have concluded that a deadly blaze last week was an accident... although they still cannot precisely determine the cause.
Fire Chief Ken Fustin says investigators found the remnants of a space heater in the debris of the heavily-damaged home on North Ninth, and have found nothing else that might have sparked the fire.
Four people died in the residence... one of the victims was found just inside a door that had a double deadbolt lock on it. And Fustin says there was no indication of any working smoke detectors in the home.
