In a separate incident, gunmen shot dead a government employee in the Shiite neighbourhood of Amil in Baghdad.
A sticky bomb attached to a civilian car detonated in Baghdad's Doura district, killing the driver and wounding a civilian, the source said.
Another bomb exploded in a car in Baghdad's Husseiniyah district, killing the driver and wounding two passersby.
In Iraq's Nineveh province, the provincial governor Atheel al-Nujaifi escaped unharmed from a roadside bomb explosion near his convoy in Mosul city, around 400 km from here, said a provincial source.
