Neighbor died, how to research whats happening with house

[Sheri Cabral]

Neighbor of one of my rentals passed away.  As far as I know he lived there alone, how do I research and find out whats happening with the house, if the price was right I wouldn't mind flipping if it made sense.  Whats the first step to take to see who actually owns the house now?   It's been vacant for a few months with no sign of anyone being there.  I'm a realtor but not super active in it so not sure how to go about this.  :)