Uh oh: Intelligence IG says Hillary's server held information beyond top secret

In a letter to lawmakers, the intelligence community’s internal watchdog says some of Clinton’s emails contained information classified Top Secret/Special Access Program, a secrecy designation that includes some of the most closely held U.S. intelligence matters.

Two American intelligence officials tell NBC News these are not the same two emails from Clinton’s server that have long been reported as containing information deemed Top Secret.

The letter doesn’t make clear whether Clinton sent or received the emails in question, but in the past, emails containing classified information have tended to have been sent to Clinton, not written by her.