At least two of the key suspects in the Benghazi terror attack were at one point working with Al Qaeda senior leadership, sources familiar with the investigation tell Fox News.

The sources said one of the suspects was believed to be a courier for the Al Qaeda network, and the other a bodyguard in Afghanistan prior to the 2001 terror attacks.

The direct ties to the Al Qaeda senior leadership undercut early characterizations by the Obama administration that the attackers in Benghazi were isolated “extremists” — not Al Qaeda terrorists — with no organizational structure or affiliation.