At least 10 people were killed on Monday in what appears to be a coordinated attack across the Iraqi capital targeting police and army personnel, Iraqi officials said. Monday's violence was mostly the work of gunmen in speeding cars attacking police and army checkpoints that dot the city as well as military patrols in the early morning hours, officials were quoted as saying by the Associated Press. At least 21 people were also injured in the attacks. The first attack came around 3 a.m. in western Baghdad when gunmen in a speeding car opened fire on an army patrol, killing one soldier and injuring another, Iraqi officials said. That incident was followed by at least six other attacks. Although most of them were drive-by shootings, a roadside bomb in western Baghdad targeting a police patrol killed three civilians.