The FBI is investigating former CIA Director John Brennan and former FBI Director James Comey for possible false statements to Congress following a referral from the current CIA Director John Ratcliffe,

Brennan said on Wednesday he "knows nothing" of the Department of Justice investigations into himself and ex-FBI Director James Comey but slammed the probes as politically motivated.

John Ratcliffe, the C.I.A. director and a harsh critic of his Democratic-appointed predecessors, has made a criminal referral of Mr. Brennan to the F.B.I., accusing him of lying to Congress, official...