The Washington Post reported that within the last week, the agency had contacted a Denver-based technology company that helped with managing the system.
The issue of classified information potentially being compromised was referred to the Justice Department – raising concerns and interest in Clinton's private emails.
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"Quite predictably, after the intelligence community inspector general made a referral to ensure that materials remain properly stored, the government is seeking assurance about the storage of those materials," Kendall said.
According to The Washington Post two officials said on Tuesday that Clinton is not a target for the FBI and they did not accuse her of doing anything wrong. Still, the presidential candidate has denied multiple times that she sent any classified information.
"I am confident that I never sent nor received any information that was classified at the time it was sent and received," she said in New Hampshire last month.
Though Clinton denies any speculation that classified information may have been sent or received, her lawyer says that he and his client are "actively cooperating."
Last week, another batch of Clinton's emails were released by the State Department. The third round of emails included over 1,300 pages of correspondence. In May, close to 300 emails were released, followed by 3,000 pages in July.