Property at County Tax Deed Auction and Auction.com at same time.

[Sukhwinder Chand]

Hi Biggerpockets. I found a property at a county tax auction website, while researching i found the property is also on auction.com possibly by lender about two weeks after the tax sale. Still waiting for title search. Mortgages are supposed to be wiped out at tax sale but since a private auction is already scheduled does that put the tax auction winner at risk. can someone buy at tax sale and still be foreclosed by a lender?