US Attorney General Pam Bondi has ordered prosecutors to open legal proceedings into allegations of a so-called Russiagate conspiracy that Donald Trump has long claimed was concocted by political foes to smear him.
Bondi has ordered a federal prosecutor to seek a potential indictment, according to the BBC's US partner CBS News.
It is unclear, however, what the possible charges might be and who could be charged.
Last month, US Director of National Intelligence Tulsi Gabbard accused former President Barack Obama and his national security team of a "years-long coup" against Trump as she released a declassified report that Democrats branded false.
Gabbard alleged that intelligence about alleged Russian meddling in the 2016 White House election had been politicised by the Obama White House to falsely tie Trump to Russia. Trump reacted by accusing Obama of "treason".
