Inheriting a "sexually violent predator against children" tenant

[Brook Rieman]

We had our offer accepted on our first rental property and after looking up the current tenants, we've got a convicted, registered sexually violent predator against children in this triplex. Repeat offender. Anyone dealt with this before? There are currently no children in the other two units but kids living within 20' of his door at the neighboring property. His existing lease is not up until Aug of 19 and he's been in the property 5 years. I am sick about this. Obviously I don't want to renew his lease but any options before that?