Need some advice about our tenant and boyfriend. Police matter.

Hello, I am a landlord who is renting our basement suite to 2 x tenants (mother & daughter). We all live in the same house. Everything has been ok until our tenant ( the daughter )recently has a new boyfriend. The tenants boyfriend has been coming to our house but hasn't been staying or sleeping. They (daughter and boyfriend )are currently staying and sleeping somewhere else at the moment. Today however, the police showed up to our front door and said they were looking for and had an arrest warrant issued for the tenants boyfriend due to him physically assaulting our tenant which is a very serious matter. What are my options in evecting our tenants? I am really concerned about the safety in my own home especially if the boyfriend shows up again. What are my options?