It's time for the United States to hold Iran accountable.

Protesters have clashed with security forces in southwestern Iran, a day after several demonstrators were injured in nighttime skirmishes over water shortages and pollution, Iranian state media reported.

The protests late on Sunday were held in Abadan, just south of Khorramshahr along the border with Iraq, where 11 people were hurt on Saturday when an unidentified gunman opened fire during a demonstration, according to officials.

State-run IRNA news agency did not specify how many people were involved in the Abadan demonstration, but said security forces had broken up a crowd that was "disrupting public order".

It said people protesting over poor water quality in a western district of the city had thrown projectiles and set fire to rubbish bins and a vehicle.

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