Special counsel Robert Mueller is now investigating whether President Trump attempted to obstruct justice into the federal probe of Russian interference in the presidential election last year.

While the FBI had originally said Trump was not being investigated for possible collusion between his campaign associates and Russia, the commander in chief is now under scrutiny for his actions in response to the probe, according to a Washington Post report. The news broke in the early evening on Wednesday, which also happens to be Trump's 71st birthday.

Though former FBI Director James Comey previously assured Trump in private that he was not under investigation, officials say that changed days after Trump fired Comey May 9.

The FBI is expected to meet with Director of National Intelligence Dan Coats, National Security Agency Director Mike Rogers and NSA Deputy Director Richard Ledgett as early as this week about the new concern in the almost year-long probe.

A Justice Department official told the Washington Examiner in mid-May that Deputy Attorney General Rod Rosenstein told lawmakers that the special counsel "would have the ability to investigate obstruction of justice if he chose to, but did not say that any such investigation existed."

The White House recently hired Marc Kasowitz to field all questions about the Russian investigation as they pertain to Trump and his campaign associates.

A response from Trump's legal team was sent out moments after the Washington Post report was published. "The FBI leak of information regarding the President is outrageous, inexcusable and illegal," said Mark Corallo, a spokesman for Kasowitz.

White House deputy press secretary Sarah Sanders said on Tuesday that Trump has no plans to remove Mueller, despite a claim by his friend, Newsmax CEO Chris Ruddy, that the option might be under consideration.