Islamic State captures Iraqi town, oil field - witnesses

BAGHDAD, Aug 3 (Reuters) - Islamic State Sunni insurgents have captured the northern Iraqi town of Zumar and a nearby oil field after a battle with Kurdish forces who had control of the area, witnesses said on Sunday.

Islamic State, which staged a lightning advance through northern Iraq in June, has warned residents of nearby villages along the border with Syria to leave their homes, suggesting they were planning an assault, witnesses said.