It's also likely that if this blew up in their faces as it appears to have happened, they acted to deep-six any information about it. My understanding from investigations at the time was that CIA did hide info about terrorists infiltrating into the US from the FBI to protect "sources and methods." This was part of the "stove-piping" criticized at the time. Maybe now we know why.
“My understanding from investigations at the time was that CIA did hide info about terrorists infiltrating into the US from the FBI to protect “sources and methods.” “
That is both true and misleading at the same time.
Dig deeper.