The video below shows the start of the fire all the way through to the fire department putting it out. The fire begins when the wires start sparking in the lower right portion of the video. The fire then smolders for a bit, so I sped that up, until it finally catches fire. I sped up the fire portions, but slowed the videos down any time somebody comes onscreen.
Below the video are the pictures I took of the damaged areas after the fire department let me in the building, but before the board up company came by to seal the building. One picture is of the fire itself from somebody who came by and noticed it.