Social Media Led Authorities to a Benghazi Terror Suspect

It may be the biggest break in the international manhunt for the Benghazi killers and it's all thanks to social media. Tunisian authorities are holding a man named Ali Ani al-Harzi suspected of participating in the Sept. 11 attacks that killed Ambassador Chris Stevens and three other Americans. Why do they think al-Harzi was involved? Apparently, he got a little too giddy about the incident and posted an update about the attack on a social media site shortly after the assault began.