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Donald Trump fired off a flurry of tweets this morning, in an apparent attempt to head off a hearing on alleged Russian interference in the US election.

FBI Director James Comey is due to give evidence to the House Intelligence Committee on both the alleged election meddling and Trump’s unfounded claim he was wiretapped by Barack Obama.

Trump’s tweets appeared to be a frantic attempt to distract attention ahead of what promises to be a bombshell in the story which has dogged his young presidency.

He wrote: “[Former Director of National Intelligence] James Clapper and others stated that there is no evidence Potus colluded with Russia. This story is FAKE NEWS and everyone knows it!”

He added: “The Democrats made up and pushed the Russian story as an excuse for running a terrible campaign. Big advantage in Electoral College & lost!”

(Image: Getty Images North America)

A third tweet was even more explicit in its attempt to deflect attention away from his alleged links to Russia.

He wrote: “The real story that Congress, the FBI and all others should be looking into is the leaking of Classified information. Must find leaker now!”

Representatives Devin Nunes, chairman of the House of Representatives Permanent Select Committee on Intelligence, and Adam Schiff, the panel's top Democrat, have called FBI Director James Comey and NSA Director Admiral Mike Rogers to testify as part of their committee's probe into allegations that Russia meddled in U.S. elections.

Other congressional committees also are investigating the matter, mostly behind closed doors. But amid a furor over whether Moscow tried to influence the 2016 presidential race on Trump's behalf, lawmakers said they would make public as much of their probes as possible.

(Image: Getty Images North America)

Russia denies attempting to influence the election.

Comey and Rogers are not expected to reveal much in public about the probes, which include information that is classified Top Secret and also separated into different compartments, each of which requires a separate clearance.

But the hearing could become heated as Republicans balance support for their party's leaders and Democrats vent frustration over Republican congressional leaders' refusal to appoint a special prosecutor or select committee to investigate.