Iraq faces pockets of Islamic State resistance in Mosul's Old City

FILE PHOTO: Destroyed buildings from clashes are seen in the Old City of Mosul, Iraq July 10, 2017. REUTERS/Thaier Al-Sudani

MOSUL/TIKRIT, Iraq (Reuters) - Iraqi forces hit further pockets of resistance from Islamic State militants in Mosul's Old City on Friday, four days after the prime minister declared victory.

Army helicopters flew overhead and explosions could be heard, residents said.