Need Help - Insane situation

[Alex SImon]

So for the past year or so I've owned two properties in Philly and they were going along pretty well with a few little hiccups here and there. Now all of a sudden, two of the three units stopped paying and the other just up and left without notice. My property manager has started eviction on the two non-paying tenants, but honestly I can't shake the idea that all of this happening at once was not a coincidence. Something is seriously wrong with this picture and I have no idea how to find out what it is. I'm a newbie, and until this very moment I had no idea just how inexperienced I was. Part of me thinks this is somehow an intentional move by my property manager, though I can't think of any conceivable motive for such a thing.

So I have no idea how to proceed here, and I would really appreciate some advice from any experienced landlords on the matter. I'm on the other side of the planet from my properties and I never thought I'd be dealing with evictions so soon, let alone two at once! Do I just let the manager do their jobs (assuming that I'm just being paranoid and they *aren't* setting out to ruin me)? Do I try to contact the non-paying tenants to find out more information? Anyone know anything that could be useful here?

I mean, the only conceivable motive for the property manager somehow orchestrating this is pure childish spite.  But I have see way too much of that in the world to put that possibility completely out of my mind.