Analysis of information sources in references of the Wikipedia article "Oito de Teerã" in Portuguese language version.
Control over Shah Anjir Village, as well as the valley in which it sits, was being fought over by two Mujahidin groups, Hizb-e Wahdat and Harakat-e Islami. Both groups comprised of Shia Hazara, and together formed part of an alliance of Mujahidin groups known as the Tehran Eight, due to their support from Iran, who fought against the occupying Soviet forces. This support was not only ideological and political, but also material, as Iran provided these groups with arms and other supplies.