Attacks across Iraq killed five people, including two brothers shot at a family jewellery store, security officials said on Saturday.
In the deadliest incident, gunmen broke into a jewellery store in the town of Al-Hafriyah, around 50 kilometres (30 miles) southeast of the capital, and killed two teenage brothers who were opening it before their father's arrival.
"The gunmen used silenced weapons, they robbed the store and escaped without anyone seeing them," a police officer said, speaking on condition of anonymity.
A witness in the town told AFP that one of the youths was killed in the store, while the other died of his wounds on his way to the hospital.
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In the town of Deli Abbas, northeast of Baghdad in restive Diyala province, an alcohol store owner was gunned down in front of his home, an official in the Baquba operations command said.
A woman in her thirties was killed by gunmen in a market in the centre of the main northern city of Mosul, a police first lieutenant said. It was unclear why the woman was targeted.
Meanwhile, a civil servant in the ministry of science and technology was killed by a magnetic "sticky bomb" attached to his car in the Al-Ilam neighbourhood in Baghdad's southwest, an interior ministry official said.
Bomb and gun attacks in Mosul in north Iraq, Baghdad, and Fallujah, just west of the capital, also left five people wounded, including two soldiers and a young child, security officials said.
The violence comes with barely two months to go before all US troops must withdraw from the country, under the terms of a bilateral security pact.
Violence has declined nationwide since its peak in 2006 and 2007, but attacks remain common. A total of 185 people were killed in September, according to official figures.