AP PHOTOS: Iraqis flee Mosul fighting

Iraqi displaced citizens who fled the fighting between Iraqi forces and Islamic State militants, sit in an open field as they wait to cross to the Kurdish controlled area, at an open field in the Nineveh plain, northeast of Mosul, Iraq, Friday, Nov. 18, 2016. Iraqi troops advanced cautiously into eastern districts of Mosul on Friday, facing stiff resistance from Islamic State militants a day after they paused their assault due to poor visibility, officers said. The pause also allowed the residents running out of food in areas liberated from IS to get some supplies from Iraqi troops and aid organizations. (AP Photo/Hussein Malla) (The Associated Press)

Iraqi men who fled with her parents the fighting between Iraqi forces and Islamic State militants, sit on the ground as they wait to cross to the Kurdish controlled area, in an open field in the Nineveh plain, northeast of Mosul, Iraq, Friday Nov. 18, 2016. Iraqi troops advanced cautiously into eastern districts of Mosul on Friday, facing stiff resistance from Islamic State militants a day after they paused their assault due to poor visibility, officers said. The pause also allowed the residents running out of food in areas liberated from IS to get some supplies from Iraqi troops and aid organizations. (AP Photo/Hussein Malla) (The Associated Press)

Iraqi boys who fled with their parents the fighting between Iraqi forces and Islamic State militants, play soccer as they wait to cross to the Kurdish controlled area, in an open field in the Nineveh plain, northeast of Mosul, Iraq, Friday Nov. 18, 2016. Iraqi troops advanced cautiously into eastern districts of Mosul on Friday, facing stiff resistance from Islamic State militants a day after they paused their assault due to poor visibility, officers said. The pause also allowed the residents running out of food in areas liberated from IS to get some supplies from Iraqi troops and aid organizations. (AP Photo/Hussein Malla) (The Associated Press)

Displaced Iraqi citizens have been fleeing the fighting between Iraqi forces and Islamic State militants, crossing the Nineveh plains northeast of Mosul to reach the Kurdish-controlled areas.

Iraqi troops advanced cautiously into eastern districts of Mosul on Friday, facing stiff resistance from Islamic State militants a day after they paused their assault due to poor visibility, officers said.

On Thursday, cloudy skies over Iraq's second-largest city had obscured the visibility of the drones and warplanes on which the troops rely, hindering their advance.

Here are some images from The Associated Press from Mosul, Iraq, on Thursday and Friday.