[29] On 17 July, YPG-led forces captured all of the roads and villages surrounding Al-Hasakah, fully besieging the ISIL militants remaining inside of the city.

[36] On 23 June, three or four ISIL suicide bombers targeted a Syrian Army security compound, a military checkpoint near a children's hospital, and a YPG police station in the Kurdish-held part of the city.

[39] Two days later, ISIL began an assault on the Syrian government-held parts of the city, after detonating an VBIED near a checkpoint at the southern entrance, seizing the al-Nashwa and al-Shari'ah neighborhoods, the children's hospital, and the education college.

[45] On the same day, ISIL forces launched an assault on Syrian government-held areas to the east of the Kurdish held Abd al-Aziz Mountains, capturing territory from the village of Abyad to the south of Al-Harmalah, west of Al-Hasakah city.

[11] On 27 June, the YPG was engaged in the battle for Al-Hasakah city, as it supported local Syrian government forces near al-Villat al-Homr, on the outskirts of the Ghuweran neighborhood.

[48] The Syrian Army launched a counterattack, after 400 Republican Guard soldiers from Deir Ezzor were deployed to Al-Hasakah, while the Asayish declared a curfew over the city.

[57] On 1 July, the Syrian Army brought in new reinforcements, while two VBIEDs were detonated inside the city,[58] as ISIL renewed its attack on the Ghuweran district.

[64] On 10 July, ISIL militants captured the military housing to the east of the Al-Zuhour neighborhood, fully besieging the Syrian Army forces in the juvenile prison and the power plant to the south of Al-Hasakah city.

The goal of the third and final phase was to recapture the villages surrounding Al-Hasakah City, in order to build another buffer zone to prevent the encroaching combatants of ISIL from re-entering.

[73] At the end of the day, ISIL retreated towards the Shar'iah neighborhood, while the YPG and Syrian government forces made new gains in the city.

[75][76] On 26 July, the SOHR reported that Syrian government forces had managed to isolate the ISIL units in the southern Al-Hasakah city, separating the contingents battling the YPG in western al-Neshwa from the units fighting Syrian government forces in the al-Zuhour neighborhood, in the southern part of Al-Hasakah city.

A few remaining ISIL militants were said to be trapped inside the west district of the Al-Nishwa Quarter, with all available supply lines breached and nowhere to escape.

[5][81] Later on 28 July, the Al-Zuhour District was nearly cleared by YPG and Syrian Army forces, resulting in the remaining ISIL militants being pushed to the southern outskirts of the city.

[32] The remaining ISIL militants tried to entrench themselves inside buildings near the Youth Housing Camp, but were subjected to further assaults, with 20 fighters killed by YPG forces.

[26] Clashes continued in the southern suburbs until 1 August,[84] and later on that day, the city was reportedly secured from ISIL, after their last stronghold in the al-Zuhor district was captured by SAA/YPG forces.

The sources also stated that the Syrian government and the YPG had now begun negotiations for redistributing contested territories seized by either side during the battle.

[86] On the night of 3 August, YPG-led forces captured farmland from ISIL near the village of Rajman, to the southeast of Al-Hasakah city, in a clearing operation.