Original sentence: After a brief but violent confrontation at Atabek Park in Tehran, Yeprem Khan, using Bakhtiyari tribesmen and Armenian veterans of the civil war, along with police and army, disarmed Sattar Khan and wounded him.He further split from revolutionaries, when in 1910, Sattar Khan, a hero of the Civil War, refused to obey the government order to disarm.In September 1890, while trying to cross the Russo-Ottoman frontier with several hundred Armenian fighters to "foment disturbances and instigate European intervention in favor of reforms for Ottoman Armenians", Yeprem was arrested by the Russian Cossacks and exiled to Siberia by 1892, from where he managed to escape to Tabriz in 1896.Some claim that Sattar Khan's death in 1914 was caused by the wounds sustained during the incident with Yeprem Khan at Atabek Park.Yeprem Khan Davidian (), also Yefrem Khan,  (1868-1912) was an Iranian Armenian revolutionary leader and national hero of Persia (Iran).fa:یپرم‌خان.to an Armenian family in the village of Barsum, located in Elisabethpol (Ganja) Governorate of the Russian Empire  (located in present-day Azerbaijan)
Edited sentence: (located in present-day Azerbaijan).After a brief but violent confrontation at Atabek Park in Tehran, Yeprem Khan, using Shah's army and police forces, disarmed Sattar Khan...He further split from revolutionaries, when in 1910, Sattar Khan, a hero of the civil war, refused to obey the government order to disarm.In September 1890, Yeprem was arrested by the Russian Cossacks and exiled to Siberia by 1892, from where he managed to escape to Tabriz in 1896.Yeprem Khan Davidian (), also Yefrem Khan,  (1868-1912) was an Armenian revolutionary leader and national hero of Persia (Iran).to an Armenian family in the village of Barsum, located in Elisabethpol (Ganja) Governorate of the Russian Empire