Another high-ranking Iraqi official has been gunned down in Baghdad. Baghdad’s deputy police chief and his son were shot dead as they left the family home on Monday. Their car crashed into a house after they had been shot. His assassination came hours after the acting police chief of Sammara was also killed in a drive by shooting. Meanwhile, al Jazeera is reporting that US helicopter gunships attacked multiple sites in the northern city of Mosul and that US and Iraqi forces closed five bridges in the city. In southern Baghdad today, a bomber driving a police car blew himself up at a police station, killing at least three Iraqis. In a separate incident, a number of US soldiers were killed and others injured when an explosive device hit a US military patrol in Abu Ghraib, west of Baghdad. The US military said on Monday that a marine had been killed in action in al-Anbar province in western Iraq. Today’s violence comes after another deadly weekend for Iraqi civilians, in which US soldiers may have killed as many as 19 Iraqi civilians in two incidents. On Saturday, 14 Iraqis were killed and five injured after an American warplane dropped a 500-pound bomb on an Iraqi home in a village near Mosul. The US military said it was a mistake. Journalists report rows of freshly dug graves where local people said the dead were buried. Meanwhile, US soldiers who were struck by a roadside bomb allegedly opened fire on Iraqi bystanders on Saturday evening, killing at least three civilians and two policemen. The military says it is investigating both incidents.