Someone shot in unit - need help in how to respond?

[Brian Kaminski]

I just received a call that someone was shot and killed inside one of my units last night.  The people involved aren't on the lease. Sounds like a fight broke out and someone was shot and killed.  This property is a duplex and I have another duplex right next door.  The tenant who lives upstairs called me today very concerned for their safety which is expected.  I need some advice on whether or not I can evict the tenant where this took place even though they weren't personally involved..?  This is actually a very nice neighborhood and very quiet.  I don't want the other three tenants to leave over this issue because they feel unsafe..  Any help or guidance would be appreciated.  Thanks