Iraqi Government forces backed by air power have engaged militants from the Islamic State terrorist group during various clean-up operations across the crisis-hit country and killed at least 182 extremists.According to a statement released by the Iraqi defence Ministry on Friday, a total of 124 ISIS militants died when Iraqi security forces, supported by military aircraft, struck the terrorist positions in the northern provinces of Kirkuk and Salahuddin as well as the troubled western province of Anbar, a report on Press TV said on Saturday.