"Significant advances of the Syrian army and its popular allies, backed up by the Russian and Syrian fighter jets, in the Northern countryside of Aleppo city have forced several terrorist commanders, including Commander of 16th division in Bani Zeid Abdulkhaliq Hayati, to leave their forces behind and flee the battlefields toward Turkish border to find safer shelters," the sources said.

"Hayati had resigned under the pretext of serious illness," the sources added.

"Over 60 members, mainly commanders, of al-Nusra Front and Nouralddeen al-Zinki have left a large volume of Saudi and Turkish logistical equipment and machinery behind and fled the battlefield in al-Lairamoun, Bani Zeid, al-Malaah and Castillo," they went on to say.

In relevant developments in the province on Tuesday, Syrian army soldiers and Hezbollah fighters continued attacking the strongholds of the terrorist groups in the Northern countryside of Aleppo and cut off possibly the last supply line of the militants in the region.

"One of the last supply lines of terrorists for transferring arms and ammunition to Afrin in Northern countryside of Aleppo was cut off in the government forces' clean-up operation in al-Lairamoun and Castillo road," the sources said.

"Closure of this supply line can be considered as one of the main measures to complete siege on Aleppo city," they added.

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