An FBI agent accused of bias in his handling of the investigation into Hunter Biden’s laptop has resigned. Assistant FBI Special Agent Timothy Thibault is no longer with the office, according to Fox News. Thibault retired over the weekend, according to a source familiar with the matter. He was removed from the building on Friday, which is standard procedure, according to the source. NBC News reported this week on the contents of Hunter Biden’s laptop as the president’s son remains under federal tax investigation. (AP Photo/Andrew Harnik) Thibault’s name is in the news for his alleged bias and allegations that he tried to interfere with the Hunter Biden investigation. Thibault was named by Senate Judiciary Chuck Grassley in a July 18 letter to FBI Director Christopher Wray and Attorney General Merrick Garland. Grassley cited whistleblowers who alleged a pattern of political bias by high-ranking officials, including Thibault. FBI Director Christopher Wray testifies during a Senate Judiciary Committee hearing in the Hart Senate Office Building on August 4, 2022. (Tom Williams/CQ-Roll Call, Inc via Getty Images) According to Grassley, the whistleblowers said that DOJ and FBI officials must follow strict substantive guidelines for opening an investigation, and that Thibault did not follow those guidelines. FMR FED ATTORNEY: DOJ IS LOOKING AT TRUMP DOCUMENTS ON IT’S OWN ‘ALMOST AS IF THEY ASKED PERMISSION TO BE DIRECT’ “As you know, Assistant Special Agent Tim Thibault is not the only politically biased FBI agent in the Washington Office,” Grassley wrote. He added that “the FBI answers to Congress and the American people.” During a Senate Judiciary Committee hearing earlier this month, FBI Director Christopher Wray called the whistleblowers’ allegations “deeply troubling.” He promised whistleblowers would be protected and removed Thibault from his supervisory role. Thibault was one of 13 assistant special agents in charge of the Washington field office. He was not involved in the FBI raid on former President Trump’s Mar-a-Lago estate earlier this month at any level. CLICK HERE TO GET THE FOX NEWS APP The FBI told Fox News it does not comment on personnel matters. Grassley’s office responded to Fox News’ request for comment ahead of publication.