ez-Zor's military hospital. Three days later, the chief of Syrian Military Intelligence in Deir Ez-Zor province, Major General Jameh Jameh, was assassinated in Deir ez-Zor. SOHR reported that he had been shot by a rebel sniper in the Rashdiya district of the city during a battle with rebel brigades. On 23 November, rebel fighters seized control of Al-Omar oilfield, the largest oilfield in Syria. Consequently, the Syrian government became almost entirely reliant on imported oil. On 27 December, rebel fighters seized control over the majority of the town of Al-Jafra, strategically adjacent to the Deir ez-Zor Military Airbase. However, three days later, Syrian troops, backed by units of the National Defense Force, recaptured Jafra. On 3 February, the rebels were pushing into the city area, capturing Hamidiyah, Hawiqa, and most of Al-Rashdiya. One week later, the rebels took over all ISIS territory in Deir ez-Zor after all ISIS fighters retreated from the city. Within a day, more than thirty FSA battalions and brigades in Deir ez-Zor united under a new coalition called "Mujahidi Deir Al-Zor Assembly". On 27 March, the rebels blew up a building in the al-Rasafa neighborhood of Deir ez-Zor city with confirmed casualties in the ranks of the Syrian Army. Aftermath April offensive On 10 April, ISIS launched a three-pronged assault on rebel positions in and near the border town of Abu Kamal and reportedly took control of parts of the town. This marked the beginning of a two-month offensive that ended when, on 14 July, ISIS held all rebel-controlled neighborhoods in the provincial capital after expelling Nusra and other rebel groups. One day later, ISIS executed the rebel commander of al-Nusra in Deir ez-Zor. ISIS also wrested away all rebel-held towns and villages across the province, assuming control of between 95% and 98% of Deir Ez-Zor province. On 17 August, SOHR said that in the two previous weeks Islamic State (IS) jihadists killed over 700 tribal members in eastern Syria in the oil-rich Deir ez-Zor Governorate. September–November 2014 Army offensive On 3 September, ISIS launched an attempt to capture the Deir-ez-Zor military airport, but the attempt was repelled and ISIS forces were forced to retreat 3 km from the base while the Army launched airstrikes on ISIS positions. According to the Army, ISIS lost at least 47 fighters. Two days later, General Issam Zahreddine returned to Deir Ezzor with a convoy of 600 Republican Guard soldiers