I
Indofred
Guest
Fire Chief John Fruetel said Thursday that some residents had smelled some kind of gas before the explosion, according to the Minneapolis Star-Tribune.
Sounds like I was right: idiot with a propane heater!
That sounds far more likely but, as I said, there is too little evidence to form a workable theory at the moment.
If that was the cause, they'll find loads of evidence as the investigation goes on.
The fire department are professionals; not morons on forums who want to spread hate.