Shia gunmen entered a prison in Basra and took at least 11 suspected Sunni terrorists hostage. Their bodies were later found in the city. They appear to have been tortured before being executed.
Violence between the Shia and Sunni has been ongoing since the terrorist attack on the Al-Askari Shrine yesterday that destroyed it's golden dome. The shrine was one of the holiest sites for Shia.
Police say all the victims were suspected Sunni militants, including several foreigners.
Basra police say the gunmen entered the Mina prison late on Wednesday, disarming the guards and seizing a group of suspected Sunni militants.
Their bodies were later found in the city, amid reports that they had been tortured before being shot.
Egyptian and Saudi nationals were among the victims, police said.
The gunmen were reportedly dressed as police officers and arrived at the prison in several vehicles.