Mosul/Kirkuk, March 14, 2010, SPA -- A string of attacks on Sunday left at least six people killed and seven injured in northern Iraq, police told the German Press Agency "DPA". In Sunday morning's worst attack, a roadside bomb killed four police officers and injured two others on patrol in the western Mosul district of al-Yarmuk, police said. To the east of the city, in the Mosul neighborhood of al-Mithaq, two civilians were fatally shot when they were caught in crossfire between police and gunmen, police told "DPA". --SPA 14:40 LOCAL TIME 11:40 GMT www.spa.gov.sa/758380