The Supernova music festival began at about 10pm on Friday, just hours after Israel"s week-long Sukkot religious festival. Thousands of young people signed up for the party but were not told the exact location until a few hours before. The festival took place at Kibbutz Re"im, 3 miles from the Gaza border. At dawn, hundreds of people were still partying when Hamas militants launched a surprise attack. Footage shared on social media showed revellers fleeing on foot while others were taken hostage and believed to have been taken into Gaza. At least 260 people were killed