WASHINGTON (AP) — President Barack Obama says it was through news reports that he first learned that Hillary Rodham Clinton used a private, nongovernment email account while serving as his secretary of state.

In an interview Saturday with CBS News, Obama says he's glad that Clinton has instructed that those emails about official business be disclosed. He also maintains that his administration remains the most transparent administration ever.

Clinton has drawn criticism for using a private server during the four years she was the nation's top diplomat. Her sidestepping official government email also raises questions about whether all pertinent messages have been preserved as well as turned over for congressional investigations and lawsuits.

Clinton says that she's turned over all relevant emails — totaling 55,000 pages — to the State Department for review.