'Voters deserve full facts': Clinton urges FBI to detail new email information

Top aides to Democratic presidential candidate Hillary Clinton insist there is "no evidence of wrongdoing" following the FBI's notification to the US Congress that it is again looking at Clinton's use of a private server for emails when she was secretary of state.

Democratic candidate Hillary Clinton during the final Presidential Debate at the University of Nevada-Las Vegas Source: AAP

"There's no evidence of wrongdoing, no charge of wrongdoing," Clinton campaign chairman John Podesta told reporters on Saturday.

Podesta, following up on calls by Clinton late on Friday, urged FBI Director James Comey to make public the details of any new developments in the case.

Podesta also complained that 24 hours after Comey's letter was transmitted to Congress, "We have no real explanation of why Director Comey" sent it.

The Washington Post reported on Saturday that senior Justice Department officials told Comey his letter to Congress was inconsistent with FBI policy of not commenting on ongoing investigations.

This latest controversy over Clinton emails has surfaced in the waning days of a bitter presidential campaign against Republican challenger Donald Trump.