BAGHDAD, July 2 (Xinhua) -- Fourteen people were killed and some 20 others wounded on Sunday in a suicide bomb attack at a camp for internally displaced people in Iraq's western province of Anbar, a provincial security source said.

A suicide bomber detonated his explosive belt at the camp for the displaced near al-Wafaa town west of Ramadi, the capital of Anbar province, and killed 14 people, including a security officer and four children, Falah al-Dulaimi from Anbar's provincial police command told Xinhua by telephone.

The massive blast also left 20 wounded, including several women and children, the officer said, adding that eight of the wounded people are in critical condition.

The Iraqi Islamic Party, the main Sunni political group, condemned in a statement the brutal attack by the Islamic State (IS) terrorist group and called to liberate the remaining cities and towns still under IS rule in Anbar province.

Earlier, the Iraqi security forces dislodged IS militants from the key cities of Anbar province, including Ramadi, some 110 km west of the Iraqi capital of Baghdad, and the nearby Fallujah.

However, the areas near the border with neighboring Syria, including Aana, Rawa and al-Qaim as well as the vast rural areas across the province are still seized by the extremist IS militants.

The incident came as Iraqi security forces, backed by the anti-IS international coalition, were simultaneously conducting a major offensive to dislodge IS militants from their major stronghold in western Mosul in northern Iraq.