Republican Sen. Richard Burr of North Carolina had to retract a statement made hours earlier that Flynn's lawyer had told the committee he would not comply with the subpoena.
Burr told reporters earlier Thursday about the response from Flynn's lawyer.
Though Flynn has left the Trump administration, the controversy surrounding him has not subsided as newly announced special counsel Robert Mueller, Congress and the FBI investigate potential collusion between Trump campaign associates and the Russian government.
Flynn resigned in February, after it was revealed that he lied about whether he had substantive contacts with the Russian ambassador before President Donald Trump took office. Emails, text messages, letters, phone records and information about financial and real estate holdings associated with Russian Federation were among the information requested by the committee.
McClatchy reported that Flynn blocked a plan conceived by former President Barack Obama's administration against the so-called Islamic State that Turkey's government opposed.
NBC News's Frank Thorp obtained a statement, which asserts that the attorneys "have not yet indicated their intentions regarding the Senate Intelligence Committe's subpoena". It is also unclear whether, given the subject matter, there is any reason the Senate could not determine that Mueller is the appropriate U.S. Attorney for the matter. The House did this anticipating the Justice Department's refusal to prosecute Holder in 2012, only to have a federal judge turn them down as well.
White House National Security Advisor Michael Flynn walks down the White House colonnade on the way to Japanese Prime Minister Shinzo Abe and President Trump's joint news conference at the White House.
On Feb. 13, Trump ordered Flynn to resign amid media reports that the national security adviser had lied to Pence about discussing US sanctions with Russian ambassador Sergey Kislyak in December 2016.
After Trump's inauguration, Flynn's representatives told the White House counsel that Flynn, who was already serving as national security adviser, would be registering with the Justice Department.
If Flynn does refuse to comply with the subpoena, the Committee has two basic choices: let it go or pursue contempt remedies against Flynn.
Flynn's lawyers have claimed that he briefed the Defense Intelligence Agency "extensively" both before and after the 2015 trip. RT has been branded a propaganda outlet by US intelligence officials.
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