Peter Strzok, deputy head of counter-intelligence at the FBI, was a key player in special prosecutor Robert Mueller's probe into possible collusion between the Trump campaign and Russian operatives trying to tilt the election in Trump's favor, the Post said. It quoted people familiar with the issue.
Strzok also worked on the probe into Hillary Clinton's use of a private email server while serving as secretary of state.
During the Clinton investigation, Strzok was having an affair with a senior FBI lawyer named Lisa Page, the Post said.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.