Already foreclosed neighbor (deceased). how do I buy?

[Matt Brechting]

I have a rental property and was mowing the lawn today. A guy from next door started talking to me. He is working for the bank to change locks, mow lawn, etc. the bank foreclosed after the owner died. I got the full tour. The house is potentially incredible, but roof leaking and black mold and the place is trashed. How do I find the bank that owns it? Who would I talk to to buy it? Can anyone help?