How to purchase a property with a long-deceased owner?

[Paul Georgia]

I recently discovered a vacant property in Maryland that is two townhouses.  The owner listed in the public records died in 2015 and I can find no records of a probate proceeding. It seems odd that it has set there for 5+ years, presumably with no taxes being paid, no upkeep of any sort and it hasn't run afoul of any type of code enforcement or been auctioned off.

How would I proceed to acquire such a property?