Early on the morning of April 11, 2002 Niser bin Muhammad Nasar Nawar and a colleague drove a truck loaded with natural gas canisters behind a German tourist bus near the El Ghriba synagogue on Djerba island, Tunisia. Nawar then used a cell phone belonging to his brother to phone Khalid Sheikh Mohammed and Ganczarski. After his colleague fled the scene on foot, Nawar detonated the explosives, killing 14 German tourists, three Tunisians and two French nationals.