WASHINGTON Top aides of Joe Biden, including national security adviser Jake Sullivan and former White House chief of staff Ron Klain, have been interviewed by Special Counsel Robert Hur , who is probing the president's handling of classified documents, the New York Times reported on Thursday.

Those who have been questioned about how government documents came to be stored in a think tank office set up for Biden after his vice presidency and in his Delaware home include officials who worked with him both at the tail end of the Obama administration and now, the newspaper said.

(Reporting by Kanishka Singh and Costas Pitas; Editing by Leslie Adler)