A US government watchdog has launched an investigation into actions taken by the FBI during the election campaign, APA reports quoting BBC.
FBI director James Comey's decision to reopen an investigation into Hillary Clinton's email server 11 days before the election shook up the race.
The Department of Justice (DoJ) Inspector General Michael Horowitz said he would look into "certain actions" by the FBI and DoJ.
Mrs Clinton was cleared of any wrongdoing days before the US voted.
Her campaign team has blamed the FBI announcement as a key factor why she lost the election to Donald Trump.
The announcement on Thursday does not mention Hillary Clinton by name but refers to public disclosures by Mr Comey.
Mr Horowitz said his review would look at a news conference in July 2016 when Mr Comey said he would not recommend charges for Mrs Clinton.
A letter to Congress on 28 October, in which Mr Comey said there were more emails to look at, will also be subject to this new inquiry.