A.R.S. § 33-1378

A person who is a guest of a tenant who is not named on a written lease and who remains on the premises without the permission of the tenant or the landlord is not a lawful tenant and that person's presence in or on the premises does not constitute residency or tenancy. A person who knowingly remains on the premises without the permission of the tenant or the landlord may be removed by a law enforcement officer at the request of the tenant or the landlord who is entitled to possession of the premises.