A total of 55,000 pages of material covering the time Mrs Clinton was in office has been turned over, according to the State Department. However, offical sources said on Friday that it could be months before the emails are released.
“The review is likely to take several months given the sheer volume of the document set,” the official said.
The controversy has landed Mrs Clinton in trouble just as she is planning to launch a bid for the Democratic presidential nomination in 2016. It has prompted some Democrats to wonder whether someone else should be their candidate in the bid to succeed President Barack Obama.