Depending on how broadly the term is defined, the roots and practice of terrorism can be traced at least to the 1st century AD. Sicarii Zealots, though some dispute whether the group, a radical offshoot of the Zealots which was active in Judaea Province at the beginning of the 1st century AD, was in fact terrorist. According to the contemporary Jewish-Roman historian Josephus, after the Zealotry rebellion against Roman rule in Judea, when some prominent Jewish collaborators with Roman rule were killed, Judas of Galilee formed a small and more extreme offshoot of the Zealots, the Sicarii, in 6 AD. Their terror was directed against Jewish "collaborators", including temple priests, Sadducees, Herodians, and other wealthy elites.