Two homes were ablaze Monday morning in Coatesville, less than a mile apart from each other.
A two-alarm fire broke out at 15 North Church Road at around 2am.
Firefighters also put out a small fire at 22 Madison Avenue.
An investigation is already underway for a string of arsons that were set on porches and outside stairways.
In 2008, there were more than a dozen arsons. And already this year, firefighters have put out at least five arsons.
