BAGHDAD, Sept. 9 (Xinhua) -- At least three people were killed and some 14 others wounded in separate bomb attacks in three cities north of Baghdad on Sunday, the police said.
The deadliest attack occurred in the city of Sulaiman Pek, some 160 km north of Baghdad, when a roadside bomb struck an Iraqi police vehicle, killing two officers aboard and a passerby, a local police source told Xinhua on condition of anonymity.
In a separate incident, a car bomb went off at about 8:30 a.m. local time (0530 GMT) in the city of Tuz-Khurmato, some 200 km north of Baghdad, near the convoy of the city's mayor, wounding two of his bodyguards and nine civilians, a local police source anonymously told Xinhua.
In addition, another car bomb was detonated in the industrial area in the city of Hawijah, some 220 km north of Baghdad, wounding three civilians, a local police said.
The explosions are seen as part of a series of bomb attacks that hit the Iraqi cities on Sunday morning and killed at least 19 people and wounded dozens of others.
Violence in Iraq has ebbed from its climax in 2006 and 2007, when sectarian conflicts pushed the country to the brink of a civil war, but tensions and attacks remain common across the country.