Libyan President Mohammed el-Megarif said he believes that the terrorist organization Al Qaeda is behind the deadly attack at the U.S. Consulate in Benghazi that killed four Americans during the week that signified the 11th anniversary of the 9/11 attacks, NPR reported Sunday. 

"We firmly believe that this was a precalculated, preplanned attack that was carried out specifically to attack the U.S. Consulate," el-Megarif told NPR. 

So far, el-Megarif said that 50 people have been arrested in connection with the attack, some of whom were not Libyans and were linked to Al Qaeda, Reuters reported.

Reuters:

"It was definitely planned by foreigners, by people who entered the country a few months ago and they were planning criminal acts since their arrival," Magarief said.

Following the attack, Al-Qaeda called for more attacks on U.S. embassies, CBS reported.

“What has happened is a great event, and these efforts should come together in one goal, which is to expel the embassies of America from the lands of the Muslims," members of the gropu Al Qaeda in Yemen said.

Al Qaeda in Yemen is considered by the U.S. the most dangerous and active of the terror network's affiliates, CBS reported.

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