Libyan President Mohammed Magarief said on Sunday that about 50 people have been arrested in connection with the deadly attack on the U.S. consulate in Benghazi last week, Reuters reported. Magarief, in an interview with CBS's "Face the Nation," said some of those arrested were not Libyans and were linked to al Qaeda. Magarief described others as affiliates or sympathizers. "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. He said the security situation in Libya remained "difficult" for Americans, as well as for Libyans. The United States wants the FBI to investigate the consulate attack, but Magarief said it may be too soon to send in investigators.