The Shin Bet (Israel Security Agency), in collaboration with the the national unit for international interrogations, detained and interrogated six Islamic Movement in Israel operatives at the end of March and the beginning of April 2017, it was cleared for release on Thursday. Among those arrested was a senior member of the movement, Saliman Agbaria, who served as the movement's director. In November 2015 Defense Minister Avigdor Liberman ruled that the northern branch of the Islamic Movement was an unlawful association and released warrants to crack down on organizations and entities that operated on behalf of the movement in Israel. Since Israel introduced a law battling terrorism in November of 2016, the Islamic Movement has been defined as a terror organization. According to the Shin Bet, during the investigation it was revealed that the suspects arrested operated to continue to preserve the movement's activities, with an emphasis on its operations in Jerusalem. They also worked through an NGO that hid its ties to the movement.