According to some open Syrian sources, the Islamists troops comprise around 250 Kazakhstan-born, 100 Kyrgyzstan-born, 190 Tajikistan-born, 500 Uzbekistan-born and around 360 Turkmenistan-born militants.
The Muslim festival of Eid al-Fitr that marks the end of the holy fasting month of Ramadan will begin on Monday in Saudi Arabia and neighbouring states.