This one is really off the charts:
The aerial pictures are amazing.
Local gas company says they can find nothing wrong, no reports of gas
leaks. Only two people died.
1) Nobody home (maybe on vacation) and problem develops with furnace or
gas water heater. Fills house with natural gas during the day / night.
Turns house into a bomb. Something sets it off - takes out house next
door (probably the two deaths). Easy to confirm if we know the
whereabouts of the occupants of the two homes (not reported yet by media
as far as I know).
2) Someone had an reason to kill the occupants of one of the homes.
Drugs, bad debt, divorce/custody, love affair / adultery, etc.
3) Collect on insurance, make it look like a faulty appliance, went
overboard with the amount of natural gas leaked.
4) Owners unemployed, bank about to repo the house, owner decided to
give the bank a smouldering crater instead.
Anyone care to vote?
I vote for 4.
Regardless why or how it happened, I can't see anything other than a
massive buildup of natural gas having enough energy to do this.