State Department Suspected Libyan Guards at Benghazi Consulate Had Tried to Attack it Back in April

Suspected, arrested, and released ... And these are the people that security was reduced in favor of...? I really hope I am missing something here.

http://www.reuters.com/article/2012/10/15/us-libya-usa-security-idUSBRE89E1AL20121015

"State Department officials suspected that two Libyan guards hired by its own security contractor were behind an April incident in which a homemade bomb was hurled over the wall of the special mission in Benghazi, according to official emails obtained by Reuters.

But the men, who had been taken into custody the day of the attack, were released after questioning by Libyan officials because of a lack of "hard evidence" that could be used to prosecute them, the State Department emails show."