Hillary Clinton wiped her personal server clean, permanently deleting all of her emails, the chairman of the House committee investigating the 2012 attacks in Benghazi said.

"While it is not clear precisely when Secretary Clinton decided to permanently delete all emails from her server, it appears she made the decision after October 28, 2014, when the Department of State for the first time asked the Secretary to return her public record to the Department," Rep. Trey Gowdy, chairman of the Select Committee on Benghazi, said in a statement.

The South Carolina Republican's statement followed a six-page letter from the former secretary of state's attorney, David Kendall, which informed the committee that Clinton had wiped her personal server. Kendall added that the 900 pages of emails previously provided covered the panel's request for all documents related to the attacks at Benghazi and that she turned over all work-related emails to the State Department.

"The Department of State is therefore in possession of all Secretary Clinton's work-related emails from the hdr22@clintonemail.com account," Kendall wrote.

Rep. Elijah Cummings, the top Democrat on the Benghazi panel, said the committee needed to change directions.

"This confirms what we all knew — that Secretary Clinton already produced her official records to the State Department, that she did not keep her personal emails and that the Select Committee has already obtained her emails relating to the attacks in Benghazi," the Maryland Democrat said in a statement. "It is time for the committee to stop this political charade and instead make these documents public and schedule Secretary Clinton's public testimony now."

The attention on Clinton's private email use has shaken her 2016 presidential aspirations.

Gowdy said Clinton's deletion of her emails could prompt new legal actions.

"It is clear Congress will need to speak with the former Secretary about her email arrangements and the decision to permanently delete those emails," he said.

Gowdy also commented on Clinton's destruction of federal records.

"Not only was the Secretary the sole arbiter of what was a public record, she also summarily decided to delete all emails from her server, ensuring no one could check behind her analysis in the public interest," Gowdy said.

Clinton turned over 30,490 self-identified work-related emails to the State Department out of a total 62,320.