How do I find info on abandoned property where owner is deceased

[Theo Van Soest]

I found a property where all of the ownership info is for a deceased person.  The taxes were last paid in 2018 (the deceased passed away in 2011, so someone paid the bills!).  There is a city notice on the front door addressed to the property and the person who is deceased, the assessor and tax info are all addressed to the property and the deceased.  How do I find out who to contact to discuss buying the property?  I need help with my detective work!