In the United States spy scandal erupted: the Russian intelligence services suspected the Russian, which is more than 10 years working at the U.S. Embassy in Moscow, and on duty had access to the internal network of the Embassy, email and databases.
The woman first came under suspicion in 2016, following a "routine security sweep conducted by two investigators from the US Department of State's Regional Security Office", who discovered she had "regular and unauthorised meetings with members of the FSB, Russia's principal security agency", The Guardian reports.
An unidentified Russian woman who worked for the Secret Service as a liaison between the agency and Russia's law enforcement and intelligence agencies was having regular unauthorized meetings with members of Kremlin's Federal Security Service (FSB), according to the United Kingdom newspaper.
The State Department alerted the Secret Service, a branch of the Homeland Security Department, in January 2017 and revoked her security clearance in the summer of that year.
"We knew it was happening and it was just a process of playing it out and giving her specific information that we saw her give back to the FSB", the official said.
The statement went on to say, "Reporting and/or questions regarding a potential security "breach" of U.S. Secret Service systems, information or reporting is unfounded as FSNs work on, and support, only projects with the intent of providing and/or sharing the information with the Russian government in furtherance of Secret Service and USG interests".
"The Secret Service is trying to hide the breach by firing [her]", the anonymous source told The Guardian.
The spy was sacked last summer, sources told the paper, shortly before the Kremlin demanded the expulsion of 750 U.S. personnel after Washington increased sanctions of the country.
"Local employees of US embassies overseas, working for the Secret service of the United States, never had access to secret or confidential information", reported the BBC.
The State Department declined to comment, saying they "do not comment on allegations related to intelligence or personnel matters, and we have no information for you on this alleged incident".
"Her activities of stealing and sharing information could shed more light on how the Russians were able to hack the 2016 presidential election office of the DNC [Democratic National Committee]", the source told The Guardian.
'This is of particular emphasis in Russian Federation. In addition, she had access to the Embassy and security services.
Butina is accused of infiltrating a pro-gun rights organization in the U.S.at the behest of a high-powered Russian official, as part of a mission to influence US foreign policy towards Russia.