Two bombs in Baghdad's western Mansour district today killed 13 people and wounding 22, police said.
The first explosion came from a roadside bomb that hit people lining up for fuel at the petrol station. When rescue services arrived, a car bomb exploded.
Residents gather at the scene of bomb attacks in Baghdad today
The interior ministry source said both were car bombs.
Mansour is an upscale neighbourhood with a mixed population of Shia and Sunni Arabs.
There has been a relative lull in major attacks and violence over the Eid al-Adha holiday, which ended yesterday.
But the US military warned yesterday that US and Iraqi forces were braced for a possible violent backlash after Saddam Hussein was hanged on Saturday.
A secretly filmed video of the hanging showed him being taunted by Shia officials just before his death.