Comeys own words
"....... Although there is evidence of potential violations of the statutes regarding the handling of classified information...."
"To be clear, this is not to suggest that in similar circumstances, a person who engaged in this activity would face no consequences. To the contrary, those individuals are often subject to security or administrative sanctions."
"None of these e-mails should have been on any kind of unclassified system, but their presence is especially concerning because all of these e-mails were housed on unclassified personal servers not even supported by full-time security staff, like those found at Departments and Agencies of the U.S. Government—or even with a commercial service like Gmail."
"There is evidence to support a conclusion that any reasonable person in Secretary Clinton’s position, or in the position of those government employees with whom she was corresponding about these matters, should have known that an unclassified system was no place for that conversation. In addition to this highly sensitive information, we also found information that was properly classified as Secret by the U.S. Intelligence Community at the time it was discussed on e-mail"