The 2012 attack on the U.S. diplomatic facility killed four Americans . Moreover , it said that people linked with various al Qaeda-related groups in North Africa and elsewhere participated in the September 11 , 2012 , attack , but investigators have n't been able to determine whether any one group was in command . A senior administration official said that while there is no evidence of a direct link between al Qaeda and ISIS, it was clear from their actions in Libya last year that they were looking to expand into North Senate committee report notes 15 people cooperating with FBI probe were killed . Also , people with al Qaeda-related groups participated in the armed assault .
The 2012 attack on the U.S. diplomatic facility killed four Americans . A senior administration official said that while there is no evidence of a direct link between al Qaeda and ISIS, it was clear from their actions in Libya last year that they were looking to expand into North Senate committee report notes 15 people cooperating with FBI probe were killed . Also , people with al Qaeda-related groups participated in the armed assault .