The FBI is also looking into the financial activity of Michael Flynn, Paul Manafort, and Carter Page, the Post says, and all of them have been cut loose from team Trump.
It was previously reported that investigators were looking into meetings Kushner had with Russian Ambassador Sergey Kislyak, as well as head of state-owned Russian bank Sergey Gorkov back in December of previous year.
The Washington Post reported Mueller's probe into Kushner's financial transactions Thursday.
Kushner's attorney, Jamie Gorelick, suggested the inquiry is just "standard practice". Russian Federation investigation special counsel Robert Mueller is reportedly investigating Kushner's finances. Gorelick pointed out that Kushner has volunteered to speak with the Senate Intelligence Committee, which is leading one of the congressional Russian Federation investigations. "He will do the same if he is contacted in connection with any other inquiry", he added.
According to the report, the new focus on Kushner's finances is "part of the probe into Russia's interference in the 2016 presidential election".
Special Counsel Robert Mueller is putting top Trump aide Jared Kushner's finances under the microscope. The banker, Sergey Gorkov, is the head of VEB Bank, a state-owned Russian entity that is the subject of USA government sanctions.
On Thursday, Trump took to Twitter to call the probe "the single greatest WITCH HUNT in American political history - led by some very bad and conflicted people!" Trump also fired James Comey, former FBI Director, in May. Earlier this week, it was revealed that Mueller is also investigating whether Trump attempted to obstruct justice when he fired Federal Bureau of Investigation director James Comey.More news: Mercury rises as Met office issues second highest heatwave alert
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The Senate's intelligence committee already has interviewed Johnson about the matter.
Comey also said Trump repeatedly sought assurances that he wasn't a target of the Russian Federation investigation.
According to the news accounts, neither Coats nor Rogers complied with Trump's requests.
"Regardless of recommendation, I was going to fire Comey knowing there was no good time to do it", Trump told Lester Holt of NBC News in an interview broadcast May 11.
Baker is reportedly the official who Comey was referring to.
Trump spoke to Coats and Rogers about the Russian Federation investigation, according to officials.