article_snippet.sent: That's the assessment of multiple sources on a man who may not have been well-known in the West, but nonetheless had a special role in the terrorist group.
article_snippet.sent: Two al Qaeda's hostages, Warren Weinstein of the United States and Giovanni Lo Porto from Italy, were killed in the same strike, while Gadahn died in another U.S. operation that month.
article_snippet.sent: The branch made The branch presence known in September 2014, when militants infiltrated Pakistan's navy and tried to hijack one of The branch ships, according to the SITE Institute, which monitors terror groups.
article_snippet.sent: the Islamist extremist group that formed in recent years's spokesman, Usama Mahmoud, on Twitter compared the Pakistani naval officers involved in the attempted hijacking to Nidal Hasan, SITE reported.
article_snippet.sent: Nidal Hasan is the U.S. Army psychiatrist sentenced to death for killing 13 people at Fort Hood, Texas.
article_snippet.sent: American mouthpiece for al Qaeda's killed .
article_snippet.sent: CNN's Sophia Saifi contributed to this report.