Hundreds of Iraqi police and soldiers were in a tense stand-off with residents of a camp housing Iran's main exiled opposition on Wednesday, after violence that left two policemen dead. At least 400 people were wounded in the unrest sparked when the Iraqi army stormed Camp Ashraf on Tuesday, followed by riot police who were called in to quell resistance by camp residents. The opposition People's Mujahedeen said six camp residents were also killed but there was no independent confirmation of those deaths. Doctor Abdullah al-Timimi from the main hospital in the nearby town of Khales said the two policemen died on Wednesday from injuries sustained the previous day. One had suffered internal bleeding following a blow to the head. The other had been stabbed in the neck, he said.