US President Donald Trump accused the New York Times of falsifying sources and again called on her to return the Pulitzer Prizes received, including for articles about Russia.

"The Failing @nytimes, winner of @PulitzerPrizes for its totally flawed coverage of the illegal Russia Witch Hunt, does its research as follows: Think of the absolute worst things you can say about Donald J. Trump, pretend there are sources, and just say it. RETURN THE PULITZERS!" Trump tweeted.

The NYT won the award for ''enthralling stories, reported at great risk'' about Russian President Vladimir Putin's government.