Joe Kent was under investigation for leaks before his resignation.
"The FBI is investigating former National Counterterrorism Center Director Joe Kent in connection with alleged leaks of classified information, multiple sources with direct knowledge of the matter tell CBS News...The probe began before Kent resigned this week..."
Looks like this investigation was ongoing but they were yet to pin him down. He even alluded to it during a Tucker interview. "
Kent appeared to respond to the suggestion that he was out of the loop in his interview with Carlson. He said at one point, after claiming the administration never put out a call for intelligence agencies to share all available information on Iran:
"I'm sure the administration will come out and say, 'No, you just weren't invited,' but I've got a pretty good idea of how those meetings look, and even if I wasn't invited, I at least would've known that they took place."
Joe Kent, ex-Trump counterterrorism chief who resigned over Iran war, under FBI investigation for alleged leaks