A daytime curfew is in force in and around the Iraqi capital, Baghdad, in an attempt to curb a surge in violence. Police have been ordered to seize any private vehicles that defy the ban, on what is the Muslim day of prayers. In continuing violence, the bodies of at least 18 people killed in a suspected sectarian attack were found near Baghdad on Friday. Hundreds of people have died since a key Shia mosque was bombed last week in the city of Samarra. In the latest large-scale attack, police quoted residents as saying about 50 gunmen ambushed the small town of Nahrawan, south-east of Baghdad, at nightfall on Thursday. They said the attackers targeted a power station, killing an as-yet unknown number of people, before moving on to two brick factories, where they killed 18 workers, all believed to be Shia. Last week, the bodies of 47 factory workers, who had been dragged from their vehicles and shot, were also found in Nahrawan. Imams warned Prime Minister Ibrahim Jaafari said he had o...