Federal police member fires his rifle near the body of an ISIS fighter during a battle at Jada district in western Mosul, Iraq March 29, 2017.

The US military said on Wednesday that 284 members of the Iraqi security forces had been killed since the battle to retake western Mosul began, with more than 1,600 wounded.

Army General Joseph Votel said during a congressional hearing that in addition to the casualties in western Mosul, the battle for eastern Mosul had lead to 490 members of the Iraqi security forces being killed with over 3,000 wounded.

Votel is head of the US military’s Central Command.

Iraqi special forces and police fought ISIS militants to edge closer to the al-Nuri mosque in western Mosul on Wednesday, tightening their control around the landmark site in the battle to recapture Iraq’s second city.