What can be done about a violent tenant?

Question Details:

I am a landlord of an multifamily apartment building. Recently one of the tenants violently attacked the superintendent. No serious harm occurred but a police report was filed and the ambulance was called. This tenant has had multiple confrontations over the years with several of the families in the building. He may also be under treatment for mental health issues, but I can not fully confirm this. What legal action can be taken against the tenant (aggressor)? Eviction?

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