Donald Trump is reportedly becoming "increasingly angry" and yelling at TV sets in the White House as his frustration grows at the investigation into alleged Russian meddling in the presidential election.

Confidants and advisers have described Mr Trump's mounting impatience at both the investigation and the media coverage it has generated.

According to Associated Press, he believes he is the victim of a conspiracy aimed at discrediting his presidency and ultimately ending his tenure of the White House.

On Friday Mr Trump acknowledged that he was the under federal investigation as the inquiry into Russian involvement in the election widened.