On the heels of a story from The New York Times, multiple sources report the Justice Department is being asked to open an investigation.
In a memo to the Undersecretary of State for management, Patrick Kennedy, the inspectors general of the State Department and the Office of the Director of National Intelligence, wrote that Clinton had "hundreds of potentially classified emails" in her private email account, according to the Times, which cited "senior government officials."
The inspectors general are independent officials tasked with conducting audits, investigations and inspections in the agencies for which they're responsible.
Clinton's use of her personal account instead of a State Department one for official business started a political storm after news of it was revealed in March.
Clinton, now a Democratic presidential contender for 2016, has insisted it was "undisputed" that the State Department had okayed her email arrangement and that she did not handle classified material on her private email account.
At first the Times reported that the inspectors general sought a criminal inquiry into the way Clinton handled possible classified information with her private email while serving as Secretary of State. It's now reported that the investigation would just look at whether sensitive information was mishandled, though not necessarily mishandled by Clinton, CNN reports.
In June, Clinton turned over to the State Department 3,000 pages of her electronic correspondence – part of a batch of about 30,000 pieces.
The content included asking an assistant to fetch iced tea, comments on scheduling glitches, and exchanges with her husband, former President Bill Clinton, among other things.
The Justice Department has not yet decided if it will open an investigation, according to the Times.