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Emails -- leaked to the media this week -- that circulated in the State Department shortly after the attacks suggested the extremist group Ansar al-Sharia had claimed responsibility for the violence via its Facebook page.
Clinton said the apparent post doesn't prove anything.
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"Posting something on Facebook is not in and of itself evidence," she said during an appearance at the State Department. "I think it just underscores how fluid the reporting was at the time and continued for some time to be."
Ansar al-Sharia later denied responsibility of the attacks. The group's Facebook page has since been taken down. In the meantime, Clinton said an investigation of the posts is underway.
Initially, White House and State Department officials said they suspected the attacks were a spontaneous "act of terror" against an anti-Muslim film on YouTube.
Image courtesy of Flickr, kakissel.
This story originally published on Mashable here.