Islamic State militants have reduced the amount of water flowing to government-held areas in Iraq's western Anbar province, officials said, a move that highlights the use of water as a weapon of war and puts more pressure on Iraqi forces struggling to claw back ground held by the extremists in the Sunni heartland.
The development is not the first time that water has been used as a weapon in Mideast conflicts and in Iraq in particular.
Earlier this year, the Islamic State group reduced the flow through a lock outside the militant-held town of Fallujah, also in Anbar province. But the extremists soon reopened it after criticism from residents.
Last summer, IS militants took control of the Mosul Dam the largest in Iraq and threatened to flood Baghdad and other major cities, but Iraqi and Kurdish forces, backed by US airstrikes, later recaptured the facility.
The battle for the dam followed the Islamic State's blitz across much of western and northern Iraq earlier last year, an advance that captured key Anbar cities and also Mosul, Iraq's second-largest city that lies to the north of Baghdad.
The Islamic State group also gained large swaths of land in neighboring Syria and proclaimed a self-styled caliphate on the territory it controls, imposing its harsh interpretation of Islamic law, or Sharia.
Last month, the IS captured Ramadi, the provincial capital of Anbar, marking its most significant victory since a US-led coalition began an air campaign against the extremists last August.
On Wednesday, IS militants closed the locks on a militant-held dam on the Euphrates River near Ramadi, reducing the flow downstream and threatening irrigation systems and water treatment plants in nearby areas controlled by troops and tribes opposed to the extremist group.
Anbar councilman, Taha Abdul-Ghani said the move will not only make the lives of people living in the affected areas more difficult but it could also pose a threat to the security forces fighting to recapture Ramadi.
If water levels drop significantly, he said, the extremists could cross the Euphrates River on foot.
"The militants might take advantage of that and attack troops deployed along the river" and the nearby Habaniya military base, Abdul-Ghani told The Associated Press.
The base has been used as a staging ground for Iraqi troops and allied Shiite militias in the fight against the militants in Ramadi and surrounding areas.
Thousands of people in government-held towns of Khalidiya and Habaniya are already suffering from shortages of drinking water because purification plants along the Euphrates have all but shut down because of already low water levels on account of the summer weather.
The residents of the towns get only two hours a day of water through their pipes, he said.
