US President Donald Trump blasts report on possible obstruction of justice probe

"Mueller is now clearly the tip of the deep state spear aimed at destroying or at a minimum undermining and crippling the Trump presidency", former House Speaker Newt Gingrich wrote on Twitter.

Mr Comey would not say in his testimony last week whether he thought the president sought to obstruct justice, but added it would be up to special counsel Mueller "to sort that out".

"In every case where there's been a special counsel appointed by the Justice Department, it is because the person being investigated brought it upon himself", he told Cooper.

The Post reported that Mueller began looking into whether Trump attempted to obstruct justice shortly after the abrupt dismissal of former Federal Bureau of Investigation director James Comey last month. At his hearing last week, Comey testified that he believed he was sacked on May 9 "because of the Russian Federation investigation". It cited five people briefed on the requests who spoke on condition of anonymity. It is now the domain of Mueller's team. The New York Times also reported the story.

Comey, who had been overseeing the bureau's Russian Federation investigation, says he had previously assured Trump he was not personally under investigation.

That all changed shortly after Comey and Attorney General Jeff Sessions testified before a congressional committee about the investigation in Russia's alleged meddling in last year's election.

Senate Intelligence Committee chairman Richard Burr, a Republican from North Carolina, and senator Mark Warner of Virginia, the panel's top Democrat, didn't provide any other details regarding the meeting.

"Telling the FBI director to close down an investigation of your senior campaign adviser for his activities during your campaign for president - if that's true, that is obstruction of justice", Toobin said.

Comey told the Senate Intelligence Committee on June 8 he believed Trump had directed him in February to drop an FBI probe into former national security adviser, Michael Flynn, that was part of the broader Russian Federation investigation.

"Congress has to get to the bottom of whether anybody is interfering or obstructing any investigation in any way".

Mueller has not publicly discussed his work.

"There's still no evidence of obstruction, and current and former leaders in the intelligence community have repeatedly said there's been no effort to impede the investigation in any way", she said in a statement.

  • Zachary Reyes