I don't think its illegal, but he may sue you. My family got sued by a burglar who stepped on a rake (I know, like the cartoons, it does happen in real life), he broke his nose, got caught, and sued us.....and also included loss of income as part of the damages he sought.
Thankfully, he lost his case, and we pressed charges. Never the less, NYS's legislature is at best, idiotic, at worst, evil.