@EC @Smokin Joe
So it looks like firefighters got the original refrigerator started fire out in the apartment but the fire was burning outside in the cladding where they couldn't see it from the inside. The cladding is what carried it floor to floor.
Thanks. That's what it looks like. If that fire was in the space between the building and the cladding, by the time it had burned through to the outside, who knows how far up the building it had already spread.