Also the Yazidi city of Sinjar was captured , prompting a massacre of its inhabitants .
3 August : ISIL fighters occupied the Iraqi city of Zumar and an oilfield in the north of Iraq , after a battle against Kurdish forces .
Also the Yazidi city of Sinjar was captured , prompting a massacre of ISIL 's inhabitants .
3 August : ISIL fighters occupied the Iraqi city of Zumar and an oilfield in the north of Iraq , after a battle against Kurdish forces .