The FBI on Friday released a summary of an interview its agents conducted two months ago with Hillary Clinton over her use of a private email server while she was secretary of state.
The FBI released a memorandum summarizing its investigation into whether the Democratic Party's presidential nominee broke the law by using the server, on which classified information was improperly stored.
The summary of the interview covers the more than three-hour interview, which investigators conducted on July 2, while the memorandum provides detail about aspects of the case.
Although large portions of both are redacted, the documents provide the most extensive information released to date by the FBI into the probe, which has dogged Clinton's campaign for the White House for more than a year.
Republicans in Congress have demanded more information from the FBI since the agency recommended in July against charging Clinton with any crimes. FBI Director James Comey said that there was evidence that Clinton and her aides were "extremely careless," but no evidence that Clinton or her aides intended to violate any laws.
The private system was used to send tens of thousands of emails about government business, including classified matters.
It was unclear whether the newly released, detailed information about the FBI investigation would reveal anything new.
Clinton's unfavourable rating has risen amid the email scandal, standing at about 55 per cent, according to an average of major polls conducted in August, according to realclearpolitics.com.
Many of the actual emails have been released to the public, and there are more to come. The State Department said in August that it must review the latest cache of 14,900 to determine which documents can be released.
The State Department has been ordered to release the emails as part of a public records request, and must evaluate which emails are work-related and whether any information should be withheld or redacted for security reasons.
Tens of thousands of other emails were previously released by the department.
Clinton was criticized last month by Donald Trump, her Republican opponent in the presidential race, after some of her emails showed that top Clinton aide Huma Abedin provided access to Clinton and the State Department on behalf of people who donated to the Clinton family's charity.