A 22 year old man named Derrick Rodriguez, according to WTEN. I wanted to post the article but the computer rebelled. There are still two suspected arsons unaccounted for.

There have been fires going on for years. ...... I think it was generally accepted because the buildings were blights anyway ....... he was solving problems ..... but eventually these type criminals will just keep pushing the limits and go too far ......

This is the one who did go to far, they think. Setting three separate fires to stuff, and then graduating to two house fires ten minutes apart, the next day.