Similarly, whether other groups like Ansar al-Sharia in Benghazi can be considered part of al Qaeda is a factual question.
Some local media also attributed claims of responsibility to Sinai-based militant group Ansar Beit Al-Maqdis.
Authorities arrested four other members of Ansar al-Sharia on Thursday.
Ansar al-Sharia: No one has disputed the participation of a local Islamist militia known as Ansar al-Sharia.
There is also a seemingly separate group in Yemen that has links to al-Qaeda and operates under the name Ansar al-Sharia.
He ordained that they should pair off in couples consisting of a man of the Mohajirun and an Ansar.
Some of the Ansar approached, and threatened to beat her with a whip if she did not stop.
Every evening Yakub entertained hundreds of the Ansar with rich food, and distributed several ardebs of dates.
Months before, orders are sent in all directions for the Ansar to assemble.
On that day the Khalifa ordered that everyone should stand to his flag, and that all the Ansar should attend at the mosque.