https://www.zerohedge.com/political/prosecutor-livid-after-fbi-refused-pursue-credible-biden-ukraine-corruption-allegations
is a summary of two links:
https://justthenews.com/accountability/political-ethics/fbi-had-40-sources-providing-intel-about-possible-criminal-activity
and
https://justthenews.com/accountability/political-ethics/federal-prosecutor-biden-bribery-claim-credible-enough-further