At least nine people were killed today in what appeared to be a series of co-ordinated attacks across Baghdad targeting police and army personnel, Iraqi officials said.
They said the violence was mostly the work of gunmen in speeding cars attacking police and army checkpoints which dot the capital as well as military patrols in the early hours.
At least 22 people were injured.
The first attack was in western Baghdad at around 3am when gunmen in a speeding car opened fire on an army patrol, killing one soldier and injuring another, officials said.
That incident was followed by at least six other attacks.
Although most of them were drive-by shootings, a roadside bomb in western Baghdad targeting a police patrol killed two civilians.
Iraqi military and police fanned out across the city following the incidents, and additional checkpoints were set up in several Baghdad neighbourhoods.
It was not immediately known who was behind the attacks or how many people were involved in the attacks, which took place over roughly two and a half hours in five different neighbourhoods across the capital.
Insurgents have often targeted Iraqi police and army as a way to undermine the country's fragile security and intimidate the security forces.