In 1982, radical elements broke away from the Rohingya Patriotic Front (RPF) and formed the Rohingya Solidarity Organisation (RSO).[3] It was led by Muhammad Yunus, the former secretary general of the RPF. The RSO became the most influential and extreme faction amongst Rohingya insurgent groups by basing itself on religious grounds. It gained support from various Islamist groups, such as Jamaat-e-Islami, Hizb-e-Islami, Hizb-ul-Mujahideen, Angkatan Belia Islam sa-Malaysia and the Islamic Youth Organisation of Malaysia.[3][2]