Former FBI Director James Comey “deviated” from FBI and Justice Department procedures in handling the probe into Hillary Clinton, damaging the law enforcement agencies’ image of impartiality even though he wasn’t motivated by political bias, the department’s watchdog found in a highly anticipated report.

“While we did not find that these decisions were the result of political bias on Comey’s part, we nevertheless concluded that by departing so clearly and dramatically from FBI and department norms, the decisions negatively impacted the perception of the FBI and the department as fair administrators of justice,” Inspector General Michael Horowitz said in the report’s conclusions, which were obtained Thursday by Bloomberg News.

Horowitz’s report examined actions taken by top officials before the 2016 election, including the handling of the investigation into Clinton’s use of a private email server when she was secretary of state. The investigation expanded to touch on an array of politically sensitive decisions by officials including Comey and former Attorney General Loretta Lynch.