Hillary Clinton has "directed her team" to give the private email server that she used while Secretary of State to the Justice Department, a campaign aide confirmed to NPR's Tamara Keith.
Until now, Clinton has turned over selected emails, but now will give the Justice Department the entire server.
Her ratings and "honest and trustworthy" numbers have slipped downward in the last few months.
Clinton, who is a Democratic presidential candidate, will also turn over a USB drive holding copies of the 30,000 emails she has already turned over to the State Department.
A statement from Clinton spokesman Nick Merrill also acknowledges a government "security inquiry."
"This past spring, Hillary Clinton asked the Department of State to publish the 55,000 pages of the work emails she provided to the Department last fall," Merrill said in a statement. "As she has said, it is her hope that State and the other agencies involved in the review process will sort out as quickly as possible which emails are appropriate to release to the public, and that the release will be as timely and transparent as possible. In the meantime, her team has worked with the State Department to ensure her emails are stored in a safe and secure manner. She directed her team to give her email server that was used during her tenure as Secretary to the Department of Justice, as well as a thumb drive containing copies of her emails already provided to the State Department. She pledged to cooperate with the Government's security inquiry, and if there are more questions, we will continue to address them."
NPR's Carrie Johnson reports that neither the Justice Department nor the FBI would comment.
As NPR has reported, Clinton's latest email dump — some 1300 messages — happened at the end of July, but many of those emails were heavily redacted.
Copyright 2015 NPR. To see more, visit http://www.npr.org/.
