Prime Minister Haider al-Abadi declared victory over Islamic State (IS) in Mosul on Monday, marking the biggest defeat for the hardline Sunni group since its lightning sweep through northern Iraq three years ago.
But the militants, armed with machine guns and mortars, have now seized more than 75 percent of Imam Gharbi, a village on the western bank of the Tigris river some 70 km (44 miles) south of Mosul, and reinforcements are expected, the Iraqi army officer said.
Islamic State launched its attack on Imam Gharbi last week, in the kind of strike it is expected to deploy now as US-backed Iraqi forces regain control over cities the group captured during its shock 2014 offensive.