Hillary Clinton has instructed aides to give the Justice Department the private email server she used during her tenure as Secretary of State, her campaign announced Tuesday evening.

Clinton has previously resisted calls to turn over the server, but her private email set-up has been the subject of increased scrutiny recently, including a reported preliminary FBI investigation.

Earlier today, Senate Intelligence Committee Chairman Chuck Grassley said information marked “top secret” had been found in two previously provided messages from the server, a charge Clinton’s camp denies. From NBC News:

Clinton aides have maintained that nothing on her server was classified at the time she saw them, suggesting that classified messages were given the label after the fact.

John Kirby, a spokesman for the State Department, said that was the case with the two emails highlighted by Grassley, adding that it remained unclear “whether, in fact, this material is actually classified.”

“Department employees circulated these emails on unclassified systems in 2009 and 2011, and ultimately some were forwarded to Secretary Clinton,” Kirby said Tuesday. “They were not marked as classified.”

“She pledged to cooperate with the government’s security inquiry,” said Clinton spokesperson Nick Merrill in a statement on Tuesday, “and if there are more questions, we will continue to address them.”

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