In the city's eastern Tahrir neighborhood, a car packed with explosives sped out from its hiding spot in a school complex, ramming into Iraqi troops' position and exploding into a ball of fire. A soldier was killed and three were wounded, two officers said, speaking on condition of anonymity because they were not authorized to talk to reporters.
Clouds over the city obscured the visibility of drones and strike aircraft, said Brig. Gen. Haider Fadhil, adding that troops are using the pause to secure areas they have taken with checkpoints and are sweeping for explosives, AP reported.
On Wednesday, heavy fighting broke out in Tahrir, where a Daesh suicide car bomber disabled an Abrams tank belonging to the Iraqi army.
Iraqi forces launched the long-awaited operation to retake Mosul nearly a month ago and advanced into several eastern districts. The troops have faced fierce resistance, with snipers, mortar fire and suicide bombers driving armor-plated vehicles packed with explosives.
After swift initial advances into the city's outskirts, the offensive slowed in more densely populated areas, where Iraqi troops cannot rely as much on airstrikes and shelling because of the risk posed to civilians, who have been told to stay in their homes.
Mosul, Iraq's second largest city, is the last major Daesh holdout in the country. Driving the militants out of Mosul would deal a severe blow to their self-styled caliphate stretching into Syria.