• Paul Manafort’s lawyer said Special Counsel Robert Mueller’s deputy has leaked details of the investigation into Russian collusion
• Senior Assistant Special Counsel Andrew Weissmann met with Associated Press reporters, which led to four news stories
• Weissmann went to a Hillary Clinton election party and gave support to then-acting Attorney General Sally Yates for defying President Donald Trump

A senior assistant special counsel to Robert Mueller’s investigation is facing allegations he leaked information to reporters concerning the Russian collusion investigation, according to a Monday court filing.

Paul Manafort’s defense attorney Kevin Downing officially leveled the leaking allegation against key Mueller deputy Andrew Weissmann as part of a new legal offensive against Mueller’s indictment of Manafort, who served briefly as Trump’s campaign manager. Downing charges that a flood of media leaks has prevented his client from getting a fair trial. Downing asked presiding federal Judge T.S. Ellis III on April 30 to convene a hearing on media leaks. The judge has yet to rule on the request.

In the latest filing, Downing charged that a senior Justice Department official — identified as Weissmann in exhibits attached to the filing — briefed Associated Press reporters in spring 2017,