Buying a foreclosure at auction.... help

[Adam Philpot]

About to bid on an occupied foreclosure at courthouse auction next week. I think I’ve done all my research but someone told me yesterday that the current owners unpaid FEDERAL taxes could come with the property. Is that true? I’ve never heard that before. Please help me understand what I may of missed. 1.) only one lien on the property (primary mortgage) 2.) property taxes are paid in full 3.) doesn’t look like any legal filings to extend foreclosure process have been started 4.) planning to offer a $1000 cash for keys if I win Any help more experienced investors have buying at auction?