On Wednesday, Starting Point host Soledad O’Brien took a look at emails revealing that the American government knew about a link between a terrorist group and the attack on the American Diplomatic Mission in Benghazi.

The emails, which were sent between 4 and 6 p.m. ET on the day of the attack, relay information via the American embassy in Tripoli, including the fact that the militant group Ansar Al-Sharia claimed responsibility for the deadly attack via social media. O’Brien spoke with House Intelligence Committee chairman Rep. Mike Rogers to find out more.