The U.S. Senate Intelligence Committee issued a subpoena on Wednesday demanding documents related to Russia from President Donald Trump’s former national security adviser Michael Flynn, ramping up its monthslong investigation of Moscow’s alleged meddling in the 2016 U.S. election. In a joint statement, Senators Richard Burr, the committee’s Republican chairman, and Mark Warner, its top Democrat, said the committee had first requested the documents from Flynn in a April 28 letter, but the retired lieutenant general had declined, through counsel, to cooperate with the committee’s request. It was the first subpoena announced by the committee in its investigation.
Warner said on Tuesday that the committee has been receiving documents as it investigates allegations that Russia sought to influence the U.S. election, something Moscow denies. But he told Reuters that some people were not complying “so we were going to take next steps.”
The Trump administration denies any collusion with Russia.
Flynn has been a focus of investigations into Russia and the election. He was forced to resign in February as Trump’s national security adviser for failing to disclose the content of his talks with Sergey Kislyak, Russia’s ambassador to the United States, and then misleading Vice President Mike Pence about the conversations.