Two people were killed and 23 were injured in a series of attacks targeting Iraqi security forces Wednesday, security sources and media reported.
One civilian was killed and five injured in two separate bomb attacks in the Baghdad neighbourhoods of al-Mahmoudiya and al-Nahda, Iraqi military spokesperson Qasim Atta said in a statement.
Separately, five civilians and 11 security personnel were injured when a car bomb exploded near an army patrol in Baghdad's southern Baya'a district.
One civilian was killed and two policemen were injured by a grenade targeting a police checkpoint in the northern city of Mosul, Aswat al-Iraq news agency reported.
Earlier, Iraqi police arrested 11 al-Qaeda suspects in northern Iraq. Most of the arrests took place in Mosul, some 400 kilometres north of the capital of Baghdad.
"An Iraqi army force arrested 11 leading figures of al-Qaeda," a police source in Mosul told the German Press Agency dpa.
The source said the operation was based on intelligence, including information gathered from people in detention.
The United States officially ended its combat mission in Iraq last week. Its remaining 49,700 troops will only have advisory, training and counterterrorism roles until they too leave in 2011