New Owner evicting Tenant

[Isaac Antoine]

Good afternoon investors, 

I am in an odd predicament as I purchased an investment property in New Orleans LA with the Previous owners tenants living there. There was no lease In place & I have requested them to move out a month ago with a formal eviction letter. They haven't left, What documentation do I need to bring to court in order to evict these people? 

Regards, thanks in advance.