Various members of Jemaah Islamiyah, a violent Islamist group, were convicted in relation to the bombings, including three individuals who were sentenced to death. The attack involved the detonation of three bombs: a backpack-mounted device carried by a suicide bomber; a large car bomb, both of which were detonated in or near popular nightclubs in Kuta; and a third much smaller device detonated outside the United States consulate in Denpasar, causing only minor damage. An audio-cassette purportedly carrying a recorded voice message from Osama bin Laden stated that the Bali bombings were in direct retaliation for support of the United States' War on Terror and Australia's role in the liberation of East Timor.