Shiite fighters and military vehicles are seen during a military operation to retake positions held by ISIS militants, on the outskirts of Muqdadiyah in Diyala province, north of Baghdad January 25, 2015.

Iraqi forces have “liberated” Diyala province from the Islamic State of Iraq and Syria (ISIS) militant group, retaking all populated areas of the eastern region, a top army officer said on Monday.

The symbolic victory for Baghdad, which has at times struggled to push ISIS back, could clear the way for further advances against the militants

“We announce the liberation of Diyala from the (ISIS) organization,” Staff Lieutenant General Abdulamir al-Zaidi said.

Iraqi forces have regained “complete control of all the cities and districts and subdistricts of Diyala province,” he said.

Diyala has seen months of fighting, especially in the Jalawla and Saadiyah areas in the province’s north, which were held by ISIS, and areas near the town of Muqdadiyah, which the militants repeatedly attacked but never took.

The last battle for a populated part of the province began last Friday in an area of villages near Muqdadiyah, northeast of Diyala capital Baquba.

Zaidi and district council chief Adnan al-Tamimi both said that Iraqi forces are now in control of the entire area.

Zaidi said that 58 members of pro-government forces were killed and 248 were wounded in the fighting, while “more than 50” ISIS fighters died.

He added that there are thousands of bombs left behind by ISIS in villages north of Muqdadiyah, which will be a major challenge to clear.

The general said that there will still be further fighting against ISIS in the rural Hamreen mountains, which stretch across multiple provinces, including Diyala.

The victory could see more forces brought to neighboring Salaheddin province, potentially including militant-held Tikrit.

ISIS spearheaded a militant offensive that began in the northern city of Mosul in June and swept down to overrun much of Iraq’s Sunni Arab heartland.

Iraqi federal forces, Kurdish troops, Shiite militiamen and Sunni tribesmen are all fighting against the militants in various parts of the country.

A U.S.-led coalition is carrying out air strikes against ISIS in both Iraq and neighboring Syria, and also advising and training Iraqi forces.

Monday’s announcement does not mean the problem of violence in Diyala – which suffered from frequent attacks even before the ISIS drive – is over.

Much will depend on how well Iraqi forces are able to hold retaken territory and efforts to reconstruct areas damaged by the fighting.

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