Liens on Freddie Mac Foreclosure

[Gretchen Parlier]

I've got a lead on a Freddie Mac foreclosure that is headed to auction.  I had an online title search done that revealed 4 other liens.  The auction terms state that a warranty deed will be issued.  What happens to these other liens?  Does the warranty deed protect me, or will I be on the hook?  Does Freddie clear these before closing?  Does anyone have experience with this?  Thank you!