Ashley

My boyfriend left a bunch of his power tools outside in the bed of his truck during a rain storm and they caught fire. How is this possible. Has anyone ever heard of such a thing. We had left our house so I wonder if someone deliberately caused this fire or if it's possible for them to catch fire in the rain. I know it sounds crazy. We have cameras outside that record but can not recover the feed of the time while this occurred when we were gone. Is it possible someone did this and hacked our camera system?