They were very normal, polite and no alarm bells went off.After they left there was a knock on the door a couple of minutes later and it was the husband/boyfriend to tell me he has a felony conviction for marijuana from 3 years ago, but "it's being expunged".I was caught completely off guard.

The closing I mentioned above was for REO that I kept as a rental, so there was nothing peculiar being done by me that would raise the bank's suspicions.

There’s a lot about your statement that seems peculiar and extremely unprofessional if not directly bigoted. 

Just be glad it wasn't marijuana plants.

I'm working on a story about marijuana grow houses and the foreclosure problem.Has anyone here rented out one of their properties to a pot-growing operation (inadvertently or otherwise.)

They can all be used to satisfy your creditors.This is not something peculiar to AZ.

The electricity could have been bypassed just the indoor marijuana farmers do it.

I found marijuana in the backyard of another rental.

Perhaps some details would bring this situation into sharper focus and why my "spidey senses" are tingling.This is a peculiar property to say the least.

This may be totally unrelated to your situation but I have heard about marijuana growers who do this.