Old City of Mosul on Sunday witnessed heavy fighting between the Iraqi troops and the ISIS.
Iraqi forces have started storming the ISIS-held Old City of Mosul Sunday, as per the reports from the Iraqi military.
It is believed to be the ISIS final stronghold in the city which used to be their capital in Iraq.
The attack is a joint operation by the Iraqi army, federal police and counter-terrorism troops. It is reported that there are 100,000 civilians remain trapped in the city. Those who try fleeing to government-controlled areas risk being caught in the crossfire or targeted by IS snipers.
Iraqi forces on the ground are being supported by the U.S.-led coalition as well as Iraqi war planes.
The local authorities have said, the police had advanced through the Old City from the south in order to recapture the mosque.
The IS group captured Mosul when it swept across northern and central Iraq in the summer of 2014. Iraq launched a massive operation to retake the city last October, and has driven the militants from all but a handful of neighborhoods. The jihadists had come together from a 2006 merger of other fundamentalist organizations, including Al-Qaeda in Iraq, and took the name ISIS after branching out to neighboring Syria in 2013.