Baghdad (AFP) - A car bomb near a main Baghdad square followed by a suicide bombing at a nearby police headquarters killed 11 people and wounded 23 Wednesday, security and medical officials said.
A police colonel said six of the dead and 11 of the wounded from the blasts in west Baghdad were policemen.
The car bomb struck near Nisur Square, where guards from the Blackwater security company gunned down at least 14 civilians in 2007, sparking widespread anger and boosting opposition to US forces in the country.
Baghdad is hit by near-daily bombings and shootings that kill hundreds of people each month.
And security forces, despite being deployed at checkpoints and other positions across the city, are consistently unable to prevent attacks.
Violence also struck outside the capital on Wednesday.
North of Baghdad, a suicide bomber struck a main checkpoint north of Baquba, killing an army colonel and three other soldiers, and wounding six.
South of the capital, a bomb targeting a military convoy in Yusufiyah killed at least two people and wounded at least eight.
The violence comes as Iraqi security forces and pro-government fighters battle to push back the Islamic State (IS) jihadist group, which has seized significant territory since June.
They are now backed by US-led air strikes targeting IS in both Iraq and neighbouring Syria, while Washington and other governments have also pledged trainers to aid Iraqi forces.