Another tax lien question for a new guy

[John Samuels]

Good afternoon everyone! My name is John and Im sort of a new person here on the forums. I have been using the biggerpockets website for a while and decided to join it today since there is a wealth of information present.

I have a question on tax liens though, which may be stupid but please bear with me.

Okay here goes, Lets say I purchase a tax lien and the owner fails to make payments in the redemption period and I foreclose. Am I responsible for any mechanics liens or other liens on the property?

I guess the word to use here is "due diligence." Hopefully I would have noticed these other liens before I made my bid but lets just say I didnt..... hypothetically. Am I responsible in this situation for paying those liens off or are they expunged from the title?

Thanks alot everyone and I look forward to meeting everyone!