The Second Gulf of Sidra offensive was a military operation in the Libyan Civil War conducted by rebel anti-Gaddafi forces in August and September 2011 to take control of towns along the Gulf of Sidra in an effort to surround Muammar Gaddafi's hometown of Sirte, which was held by pro-Gaddafi forces. It ended on 20 October, when Muammar Gaddafi and his son Mutassim Gaddafi were killed along with former defense minister, Abu-Bakr Yunis Jabr.