Inside sources close to special counsel Robert Mueller’s months-long investigation into Russian “collusion” in the 2016 presidential election say the probe may last “another year,” taking the never-ending witch hunt well beyond the 2018 mid-terms.

According to the Washington Post, people with close “knowledge” of Mueller’s investigation are openly defying President Trump’s hopes that the probe would be “winding down” after former National Security Advisor Michael Flynn pleaded guilty to “misleading” the FBI.

“People with knowledge of the investigation said it could last at least another year — pointing to ongoing cooperation from witnesses such as former Trump campaign adviser George Papadopoulos and former national security adviser Michael Flynn, as well as a possible trial of two former Trump campaign officials,” writes the Post.

“The special counsel’s office has continued to request new documents related to the campaign, and members of Mueller’s team have told others they expect to be working through much of 2018, at a minimum,” the author adds.

Mueller’s probe is under increasing scrutiny from GOP lawmakers following recent revelations of rampant anti-Trump bias throughout the special counsel’s office. Earlier this month, a senior FBI agent’s text messages were publicly released, where he said the bureau needed an “insurance policy” against the Trump presidency.