Atabak Park Incident

Large crowds of people, including Yeparm Khan, gathered to say goodbye to Sattarkhan and Baqir Khan, who fled their homes in the midst of the crowd and moved to Tehran. The government's goal was to control Azerbaijan and disarm the Mujahideen in Tabriz under the pretext of celebrating Sattar Khan and Baqro Khan. Atabak Gardens (which became the Russian Embassy) was allocated to Sattar Khan and his companions and Eshrat Abad to Baqir Khan and his companions.[1]

After a few days, they settled in the designated areas and Parliament approved a plan to disarm the Mujahideen and civilian fighters, and Sattar Khan himself. The decision was made due to the assassinations of Sayed Abdullah Behbahani and Mirza Ali Mohammad Khan Tarbiat. Another Mujahideen who opposed the plan joined Sattar Khan and his companions, fearing the government. Ali-Qoli Khan Bakhtiari sent a message to Sattar Khan: "Be faithful to the oath you took in the Majlis and avoid the dire consequences of disarmament," but Sattar Khan's supporters were not satisfied with the surrender.[1]

On the first afternoon of the Sha'ban, About 3000 Iranian government troops were commanded by Yeprem Khan, Sattar Khan's former aide in Tabriz and the head of the army. They surrounded the garden of Atabak after sending several messages. State forces used cannons and sixty machine guns and killed three hundred people in the garden within several hours. Sattar Khan made his way to the rooftop, but was stabbed in the foot in one of the corridors of the Thiri mansion and was unable to move. Shortly afterward, authorities arrested him and took him to the house of Samsam al-Saltanah, forcibly disarming him and his companions.[1]