Outgoing Deputy Director of the FBI Andrew McCabe knew of Hillary Clinton’s mishandling of classified material weeks before alerting Congressional leaders; raising serious questions over the bureau’s handling of Clinton’s private email server.

A bombshell report published by the Wall Street Journal outlines McCabe’s decision to withhold information regarding the former Secretary of State’s emails after he learned they were found on disgraced former Congressman Anthony Weiner’s laptop.

“Top FBI officials were aware for at least a month before alerting Congress that emails potentially related to an investigation of Hillary Clinton had emerged during a key stretch of the 2016 presidential campaign,” writes the WSJ.

“On Sept. 28, Strzok messaged Page that he had been ‘called up to Andy’s office’ earlier that day and told of ‘hundreds of thousands of emails turned over by Weiner’s [attorney] to sdny,’ a reference to the U.S. Attorney’s Office for the Southern District of New York. Strzok added that the email cache ‘includes a ton of material from spouse,’ a reference to Weiner’s then-wife Huma Abedin, a top adviser to Clinton,” adds Fox News.

The explosive report comes just days after McCabe suddenly announced his early retirement from the FBI; increasing pressure on the bureau as the President is set to release the controversial FISA memo at any moment.