An impostor posing as U.S. Secretary of State Marco Rubio used artificial intelligence to mimic his voice and writing style when communicating with foreign ministers, a U.S. governor and a member of Congress, The Washington Post reported, citing an official document.

It is noted that the fraudsters used both text messages and the application for the exchange of encrypted messages Signal, which has become widely popular under the Trump administration.

At least five people not affiliated with the State Department, including three foreign ministers, a U.S. governor and a member of Congress, were targeted. Authorities suspect the operation was aimed at gaining access to sensitive information or accounts, the media outlet reported.