During the confrontation in the UN buffer zone between the Cypriot bikers and the Turkish far-right group Grey Wolves, Isaac found himself trapped in barbed-wire without his co-protesters noticing he was left behind. Soon, a large group of Grey Wolves members ran towards him and began beating him with clubs and stones. They continued for several minutes, unchallenged by the nearby UN peacekeepers or a Turkish Cypriot police officer watching the beating. By the time Greek Cypriots managed to take him back from the mob, aided by the UN peacekeepers, Tassos Isaac was dead.
