United States (US) President Donald Trump denied Sunday having asked then Federal Bureau of Investigation (FBI) director James Comey to drop an investigation into former national security advisor Michael Flynn , who has since pleaded guilty to lying to the FBI about discussions with Russia.

“I never asked Comey to stop investigating Flynn . Just more Fake News covering another Comey lie!”, Trump said in a tweet.

On Saturday, Trump again insisted he and his campaign had not colluded with Moscow in last year's election, and shifted blame on the Justice Department and his rival Hillary Clinton.