My Downstairs Tenant Thinks my Upstairs Tenant is doing Drugs

[Nick R.]

This is my first post on BP! I'm a fairly new property owner and have found myself in an interesting position. My business partner and I have a total of 6 units and I received a call tonight from one of my tenants who lives in a duplex of ours. They claimed that the other tenant in our apartment may be doing drugs. They can smell "smoke" and have found some suspicious items in the yard all while there is a lot of traffic in and out of the apartment. Has anyone ran into a similar situation and if so, do you have any advice??