tax delinquent property in mississippi

[Everett Marshall]

I found a property, while driving for dollars, abandoned. Looked up the owner, found out she has passed away, started contacting her heirs and found she has one living son and 2 grand kids of a deceased son. The living son wants to sell and he lives in the same area as the house but he doesnt talk to the 2 grand kids so he doesnt know if they will agree to sell, some kinda family dispute. In conversation he reveals he knows the property taxes are delinquent (which I already knew) and that i could pay the taxes and acquire it that way, because he is dead broke and has no way of paying them. I did more research and found that someone did pay them 2 years ago but they havent been paid since then. My question is how do I go about acquiring the property via taxes if A) the property is in tax sale status and B) someone paid them 2 years ago, Please help with this.