Was The Libyan Attack Planned?

The NYT provides reason to think so:

The protesters in Cairo appeared to be a genuinely spontaneous unarmed mob angered by an anti-Islam video said to have been produced in the United States. By contrast, it appeared the attackers in Benghazi were armed with mortars and rocket-propelled grenades. Intelligence reports are inconclusive at this point, officials said, but indications suggest the possibility that an organized group had either been waiting for an opportunity to exploit like the protests over the video or perhaps even generated the protests as a cover for their attack.

Max Fisher rounds up other analysis:

Who actually pulled off the Libya attack, anyway? The "chief suspect" is an obscure extremist Islamist group called "the Imprisoned Omar Abdul Rahman Brigades," according to CNN, citing U.S. intelligence. The Libyan group, which has surfaced only this year, appears to support al-Qaeda, but it's not clear if there are any direct operational links. Earlier reports cited Ansar al-Sharia, a loose network of Libyan extremists. The Libyan ambassador to the U.S. blamed former fighters for Muammar Qaddafi's staunchly anti-Islamist regime.