Russian billionaire with U.S. investments backed alleged agent Maria Butina, according to a person familiar with her Senate testimony

Maria Butina, the Russian woman charged in federal court last week with acting as an unregistered agent of her government, received financial support from Konstantin Nikolaev, a Russian billionaire with investments in U.S. energy and technology companies, according to a person familiar with testimony she gave Senate investigators.

Butina told the Senate Intelligence Committee in April that Nikolaev provided funding for a gun rights group she represented, according to the person. A spokesman for Nikolaev confirmed that he was in contact with her as she was launching the gun rights group in Russia between 2012 and 2014. He declined to confirm whether Nikolaev gave her financial support.