Iraqi riot police lift their shields as some 4,000 people rally in Liberation Square in the center of the city of Sulaymanieh on April 1, 2011.
At least 50 people have been injured in clashes between security forces and demonstrators in Iraq's semi-autonomous region of Kurdistan, a report says.
The incident happened when 4,000 people had gathered in Liberation Square in the center of the town of Sulaymanieh, some 270 kilometers (173 miles) north of Baghdad after Friday prayers.
Clashes erupted after some people hurled stones at the police guarding the area. The police responded with batons, AFP quoting witnesses as saying.
Most of those injured were policemen, medical sources at the Sulaymanieh hospital said.
The injured also included at least one protester and a journalist working for a media outlet linked to Iraqi President Jalal Talabani's Patriotic Union of Kurdistan (PUK), witnesses and security sources said.
Kurdistan is dominated by just two parties: the PUK and the regional president's Kurdistan Democratic Party.
Sulaymanieh -- Kurdistan's second largest city -- has seen near-daily protests since February 17. Protesters are demanding the ouster of the regional government as well as an end to corruption.