Buying Surplus County Property - TEXAS

[David Sharp]

I am looking at buying some surplus land in Texas, but need a better understanding of the potential liens against the property. In each county, there are properties that were not sold at auction due to a variety of reasons. My question is, would these properties still have a lien on them if they had a bank note against them before the county foreclosed on them? 

All of these properties are owned by the county and were foreclosed by the county due to tax delinquencies. Obviously, I don't wan't to submit an offer on properties that would have an additional lien tied to them, beyond whatever the county will accept for them to have the tax lien wiped out. 

Thank you!

David