The first bomber drove his explosive-packed car into the police station building while a second blew his vehicle up at a checkpoint close to the site.
At least 30 policemen were wounded in the double attack, which follows the deaths of as many as 200 people in a number of car bombings in Baghdad on Wednesday.
Today's bombing followed a tactic frequently employed by suicide attackers, in which an initial blast is quickly followed up by a second attack.
US forces responsible for the security of Baghdad are currently building a three-mile concrete wall around the Sunni district of Adhamiya.
The physical barrier has been criticised as an unsubtle, oppressive ploy – especially by residents within Adhamiya – but American military leaders insist it will help lower levels of violence and destruction in the city.
The deployment of 28,000 additional soldiers to Baghdad, US president George Bush's infamous "troop surge", will also help enforce the current clampdown.
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