A Strela 2 was reportedly used by the Islamist militant group Ansar Bait al-Maqdis to destroy an Egyptian military Mil-8 helicopter operating in the northern Sinai region on 26 January 2014 near Sheikh Zuweid (close to the border with Gaza), killing its five occupants. This is the first attack of this type during the Sinai insurgency, which has raged on the peninsula due to the security and political turmoil since the 2011 revolution. The MANPADS is reported by United Nations to have come from former Libyan leader Muammar Gaddafi's large stocks, which have been widely proliferated after Libya's civil war chaos and have become a concern to regional and world security.