According to the report, "the move by Special Counsel Robert S. Mueller III to investigate Trump's own conduct marks a major turning point in the almost year-old FBI investigation, which until recently focused on Russian meddling during the presidential campaign".
Investigators will also look for any statements the president may have made publicly and privately to people outside the government about his reasons for firing Comey and his concerns about the Russian Federation probe and other related investigations, people familiar with the matter said.
Trump appeared to be a responding to a Washington Post report that special prosecutor Robert Mueller "is interviewing senior intelligence officials as part of a widening probe that now includes an examination of whether President Trump attempted to obstruct justice, officials said".
Mr Trump has repeatedly called the Washington Post's reporting "fake news". "Nice", Trump wrote on Twitter, later repeating his accusation that the probe is a "witch hunt".
"The FBI leak of information regarding the President is outrageous, inexcusable and illegal", a spokesperson for Mr Trump's personal lawyer told the Post.
The Post report cited anonymous sources who were briefed on requests made by investigators. It was not known whether the Federal Bureau of Investigation was the source of the information.
The leaders of the Senate Intelligence committee said in a statement issued Wednesday that they "look forward to future engagements" with Robert Mueller.
Mueller's probe is looking into any possible contact between Trump and Russian operatives and for any potentially suspicious financial dealings with those individuals according to the Post.
Mueller is leading the Russian Federation probe after being appointed by Deputy Attorney General Rod Rosenstein in the Department of Justice, which oversees the Federal Bureau of Investigation.
Then just last week, Entous followed up by reporting a new example of Trump personally trying to interfere with an FBI investigation to protect Flynn. Dianne Feinstein, the panel's top Democrat.
Considering it was the firing of Comey that got him under investigation in the first place, one would think that if President Trump truly does believe he's innocent, he'd refrain from repeating that mistake with Mueller and worsening his political and legal troubles yet further.
"You and I agree that the American people deserve a full accounting of attempts to meddle in both our democratic processes and the impartial administration of justice".