Burnt Sandwiches

I was originally planning on getting a yummy grilled vegetarian sandwich today at the Parmer Lane location of Delaware Subs. When I stopped in about 1:30PM, I found an open door and much interior blackness, along with a sign saying "Closed because of fire for nine weeks". A web search found this story at KVUE's site, which indicates that the cause of the fire was spontaneous combustion due to soaked rags improperly stored.