Gunmen using silenced pistols killed the head of Iraq's tax agency on Saturday, an interior ministry official said.
"He was shot in his car while driving in the Jamiyah district" in western Baghdad, the official said.
In the northern city of Kirkuk, "a policeman was killed, his wife was wounded and his son had both legs amputated after an attack by a sticky bomb" magnetically attached to their vehicle, police Colonel Adel Zein al-Azim said.
Attacks against senior government officials have been on the rise, with attackers typically using silenced pistols.
On Friday, gunmen used the same method to kill Sadeq Shaker, the foreign ministry secretary-general, as he drove in the Utayfiya district of northern Baghdad.
Violence in Iraq has declined dramatically from its peak in 2006 and 2007 but attacks remain common, especially in the capital. A total of 247 Iraqis died as a result of attacks in March, according to official data.
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