Kris Humphries Gives Extortion Evidence To FBI

TMZ broke the story ... Kris' camp reached out to the Feds after Myla allegedly demanded a large sum of money in exchange for her silence ... regarding incriminating details about her relationship with Kris.

Sources tell TMZ, Kris' lawyers had the conference with FBI officials in Minnesota this AM and turned over multiple recorded messages from Myla which Kris' people say proves extortion.