Oct 17 (Reuters) - The U.S. Senate Intelligence Committee has asked the son of President Donald Trump's former national security adviser to provide documents and testimony as part of the panel's probe into Russian meddling in the 2016 U.S. election, a source familiar with the congressional matter told Reuters.
Michael G. Flynn was a close aide to his father, former U.S. Army general Michael Flynn, 58, who was fired by Trump three weeks into his White House job in February as he came under scrutiny for his foreign contacts.
The son managed his father's schedule and accompanied him on trips while working at Flynn Intel Group consultancy, including one to Moscow in 2015 for an event where the elder Flynn sat next to Russian President Vladimir Putin. Russia has repeatedly denied the conclusions of U.S. intelligence agencies that Moscow interfered in the presidential campaign to help Republican Trump by hacking Democratic Party emails and spreading propaganda online.
Retired Army Lt. Gen. Michael Flynn
Retired Army Lt. Gen. Michael Flynn
National security adviser General Michael Flynn delivers a statement daily briefing at the White House in Washington U.S., February 1, 2017. REUTERS/Carlos Barria
Retired Lt. Gen. Michael Flynn arrives at the Trump Tower for meetings with US President-elect Donald Trump, in New York on November 17, 2016.
(EDUARDO MUNOZ ALVAREZ/AFP/Getty Images)
Retired United States Army lieutenant general Michael T. Flynn introduces Republican Presidential nominee Donald J. Trump before he delivered a speech at The Union League of Philadelphia on September 7, 2016 in Philadelphia, Pennsylvania. Trump spoke about his plans to build up the military if elected. Recent national polls show the presidential race is tightening with two months until the election.
(Photo by Mark Makela/Getty Images)
Retired Lt. Gen. Michael Flynn, at podium, and Republican presidential candidate Donald Trump attend a campaign event with veterans at the Trump International Hotel on Pennsylvania Ave., NW, where Trump stated he believes President Obama was born in the United States, September 16, 2016.
(Photo By Tom Williams/CQ Roll Call)
WASHINGTON, DC - FEBRUARY 01: White House Press Secretary Sean Spicer (L) yields the briefing room podium to National Security Adviser Michael Flynn February 1, 2017 in Washington, DC. Flynn said the White House is 'officially putting Iran on notice' for a recent missile test and support for Houthi rebels in Yemen. (Photo by Win McNamee/Getty Images)
Army Lt. Gen. Michael Flynn, director of the Defense Intelligence Agency, prepares to testify at a Senate Armed Services Committee hearing in Dirksen Building titled 'Current and Future Worldwide Threats,' featuring testimony by he and James Clapper, Director of National Intelligence.
(Photo By Tom Williams/CQ Roll Call)
White House National Security Advisor Michael Flynn (C) arrives prior to a joint news conference between Canadian Prime Minister Justin Trudeau and U.S. President Donald Trump at the White House in Washington, U.S., February 13, 2017. REUTERS/Carlos Barria
U.S. National Security Advisor Michael Flynn boards Air Force One at West Palm Beach International airport in West Palm Beach, Florida U.S., February 12, 2017. REUTERS/Carlos Barria
National security adviser General Michael Flynn arrives to deliver a statement during the daily briefing at the White House in Washington U.S., February 1, 2017. Picture taken February 1, 2017. REUTERS/Carlos Barria
White House National Security Advisor Michael Flynn (L) arrives at Joint Base Andrews, Maryland, U.S., February 10, 2017. REUTERS/Carlos Barria
WASHINGTON, DC - FEBRUARY 10: (AFP OUT) White House National Security Advisor Michael Flynn (R) walks down the West Wing Colonnade following a bilateral meeting between U.S. President Donald Trump and Japanese Prime Minister Shinzo Abe February 10, 2017 in Washington, DC. Trump and Abe are expected to discuss many issues, including trade and security ties and will hold a joint press confrence later in the day. (Photo by Chip Somodevilla/Getty Images)
ATLANTA, GA - FEBRUARY 02: (L-R) SCAD Dramatic writing professor Chris Auer, Producer Sandra Leviton, Executive producer and writer Michael Flynn, Tv literary agent Jeff Greenberg and Literary manager and producer Kaila York speak on stage during the 'Inside the Writers Room' event on Day One of aTVfest 2017 presented by SCAD on February 2, 2017 in Atlanta, Georgia. (Photo by Vivien Killilea/Getty Images for SCAD)
Lieutenant General Michael Flynn (ret.), National Security Advisor Designate speaks during a conference on the transition of the US Presidency from Barack Obama to Donald Trump at the US Institute Of Peace in Washington DC, January 10, 2017. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
Retired Lieutenant General Michael Flynn, U.S. national security advisor, attends a swearing in ceremony of White House senior staff in the East Room of the White House in Washington, D.C., U.S., on Sunday, Jan. 22, 2017. Trump today mocked protesters who gathered for large demonstrations across the U.S. and the world on Saturday to signal discontent with his leadership, but later offered a more conciliatory tone, saying he recognized such marches as a hallmark of our democracy. Photographer: Andrew Harrer/Bloomberg via Getty Images
WASHINGTON, DC - JANUARY 20: Michael Flynn walks out after a morning worship service on Inauguration day at St. John's Episcopal Church in Washington, DC on Friday, Jan. 20, 2017. (Photo by Jabin Botsford/The Washington Post via Getty Images)
WASHINGTON, DC - JANUARY 20: Attorney General nominee Sen. Jeff Sessions (R-AL) (R), talks with National Security Advisor Michael Flynn inside of the inaugural parade reviewing stand in front of the White House on January 20, 2017 in Washington, DC. Donald Trump was sworn in as the nation's 45th president today. (Photo by Mark Wilson/Getty Images)
Retired Lieutenant General Michael Flynn, White House national security adviser-designate, center, stands in an elevator at Trump Tower in New York, U.S., on Thursday, Jan. 12, 2017. Donald Trump is slated to meet with AT&T Inc.'s top executives on Thursday to discuss the company's proposed $85.4 billion bid for Time Warner Inc., according to people familiar with the matter. The president-elect has said he opposes the deal. Photographer: John Taggart/Bloomberg via Getty Images
WASHINGTON, DC - JANUARY 20: Donald Trump's National Security Adviser Gen. Michael T. Flynn (R) arrives on the West Front of the U.S. Capitol on January 20, 2017 in Washington, DC. In today's inauguration ceremony Donald J. Trump becomes the 45th president of the United States. (Photo by Drew Angerer/Getty Images)
Lieutenant General Michael Flynn (ret.) and National Security Advisor Designate and Ambassador Susan Rice, National Security Advisor during a ceremonial passing of authority while participating in a conference on the transition of the US Presidency from Barack Obama to Donald Trump at the US Institute Of Peace in Washington DC, January 10, 2017. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
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Barry Coburn, a lawyer for the younger Flynn, 34, declined to comment on the Senate committee's request, which was reported earlier by NBC News. The panel could issue a subpoena to the younger Flynn, although he could invoke his Fifth Amendment constitutional protection against self-incrimination and not comply.
The elder Flynn has also been asked by the panel to provide information and to testify. A source close to Flynn said that he had turned over documents to intelligence committees in both the Senate and U.S. House of Representatives.
The source familiar with the congressional investigation said that the Senate committee is not satisfied and wants to obtain more evidence from him.
The source also confirmed that the Senate panel was issuing a subpoena to former Trump campaign foreign policy adviser Carter Page after Page declined committee requests that he voluntarily turn over records related to any contacts with Russians.
Page told Reuters in an email on Tuesday that he was "cooperating with everyone in D.C. who might want my help in the interest of helping our country get to the end of this witch hunt." Page has said it was touched off by the circulation of a dossier produced by former British spy Christopher Steele on purported links between Trump, his advisers and Russia.
The Senate committee, which has sought to speak with Steele, is also investigating whether there was any collusion between then-candidate Trump's campaign and Moscow officials. Trump has denied any collusion by his associates, calling it "fake news."
The Flynn consultancy's business activities are under scrutiny by congressional and federal investigators mainly because of the lobbying work it did for a Turkish businessman.
Various congressional panels are sparring over Steele's reports outlining Russian financial and personal links to Trump's campaign and associates. (Reporting by Mark Hosenball and Nathan Layne in Washington; editing by Grant McCool)