FBI Discount TV's Big Brother Death Threats

TMZ has learned ... the meeting took place in Louisiana this week -- but after the agents reviewed the information, sources tell us the feds determined that none of the threats were "credible."

We broke the story -- a bunch of deranged fans bombarded the Moore home with frightening phone calls and emails after Shelly voted to evict Jeff Schroeder ... a fan favorite.

Sources close to the family tell us ... the threatening phone calls and emails have essentially stopped in the past couple of days -- so they're not too worried anymore.