"It should be clear to everyone Russia brazenly interfered in our 2016 presidential election process and that they undertook these activities despite our strong protests and explicit warning that they do not do so," Brennan testified at a hearing of the U.S. House of Representatives Intelligence Committee, Reuters reported.
Brennan said he believed he was the first U.S. official to raise the matter of election interference with the Russians, citing a meeting he had on Aug. 4 last year with FSB head Alexander Bortnikov.
Read alsoSenate hearing: Russian meddling did not stop at the election – CNNHe said he raised published media reports of Russian attempts to meddle in the election with the Russian official, who denied any involvement by Moscow.
Brennan said he briefed then President Barack Obama and other top officials, and that he discussed the matter with both Republican and Democratic U.S. congressional leaders in August and September.
Read alsoBritain's top diplomat believes Russia to try to hack UK electionU.S. intelligence agencies concluded in January that Moscow tried to tilt the November presidential election campaign in Republican Donald Trump's favor, including by hacking into and leaking the emails of senior Democrats. Moscow has always denied the allegation.
The early months of Trump's presidency have been clouded by FBI and congressional probes into Russian meddling and possible collusion by Trump's campaign. Trump has denied any collusion.
