4-plex property, 2 people on title

[Christopher Hunter]

I have a lot to unpack here so please be patient with me.  

I found a 4-plex property.  2 people are on title, with 1 of them being deceased.  I am in the process tracking down the 2nd person.  I have called all 6 numbers listed for said person, but all bad numbers.  DM will be going out today in hopes of reaching its intended target.  I am thinking this will be a probate matter, which I am not familiar with.  I have not started tracking down family members yet.  What might be the next steps to execute to see if there is a deal to be made here?  Any help/advice will be appreciated.

Thank you in advance.