Hillary Clinton has blamed her defeat in the US presidential election on interventions by the FBI director.
James Comey’s announcement of a new inquiry into her use of email while secretary of state shortly before election day had stopped her campaign’s momentum, Mrs Clinton said.
The Democratic candidate was speaking to top party donors in a phone call, which was leaked to the media.
Protests are continuing against the victory of her rival, Donald Trump.
In New York, about 2,000 marchers headed for the skyscraper where the president-elect lives, shouting “not my president”.
Anti-Trump activists have held daily protests in US cities since his election victory was confirmed on Wednesday.
Mr Trump seems to be rowing back on some of his campaign pledges. Having promised to scrap President Barack Obama’s healthcare law dubbed “Obamacare”, he now says he is open to leaving intact key parts of the act.
Asked by the Wall Street Journal whether he would implement a promise to appoint a special prosecutor to investigate Mrs Clinton’s use of a private email server while secretary of state, he listed healthcare, jobs, border control, and tax reform as greater priorities.
The Republican is due to be sworn in on 20 January, taking over from Mr Obama, who will have completed two terms in office.