“The United States on Friday blacklisted two Libyan militant groups accusing them of leading a 2012 attack on the US mission in Benghazi in which the ambassador and three other Americans died.
It was the first time the State Department had officially named the groups thought to be behind the deadly assault, but a spokeswoman insisted that did not mean they were the only ones responsible or that, there was any new information about the operation.
Two Ansar Al Sharia groups set up separately in Benghazi and Derna in 2011 after the fall of the former Libyan leader Muammar Gaddafi were both designated foreign terrorist organisations.
The State Department said they ‘have been involved in terrorist attacks against civilian targets, frequent assassinations, and attempted assassinations of security officials and political actors in eastern Libya, and the September 11, 2012 attacks against the US special mission and annex in Benghazi.”
Source: US blacklists militant groups blamed for Libya attack | GulfNews.com