FBI agents and federal prosecutors tasked with looking into Hillary Clinton’s use of a private email server during her tenure as secretary of state have yet to find evidence that Clinton intentionally broke classification rules, The Washington Post reported Thursday.

Anonymous U.S. officials close to the investigation told the Post and CNN that interviews with top Clinton aides in recent weeks yielded no indication that Clinton willfully violated U.S. law. Longtime adviser Huma Abedin was among those interviewed, according to CNN.

“From the start, Hillary Clinton has offered to answer any questions that would help the Justice Department complete its review, and we hope and expect that anyone else who is asked would do the same,” Clinton’s presidential campaign spokesman, Brian Fallon, said in a statement to the Post. “We are confident the review will conclude that nothing inappropriate took place.”

The FBI investigation reportedly has been focused on the security of the server and whether classified information was mishandled on the server.

Once the FBI’s probe is complete, the findings will be turned over to the Justice Department, who will then decide whether or not anyone involved will face charges, according to CNN.

A federal judge also said this week that the Democratic candidate may still be deposed about her use of the server in a civil case brought by the conservative legal advocacy group Judicial Watch.