Baghdad suicide car bomb kills six.
The blast, which struck during morning rush hour in the mostly-Shiite neighbourhood of Kadhimiyah, went off near a branch of the Istikbarat, a department of the police responsible for intelligence, according to security and medical officials.
Six people were killed, including three of the branch's guards, and 22 others were wounded, the officials said.
Kadhimiyah is home to a shrine to Imam Musa Kadhim, a revered figure in Shia Islam, and last week was the site of massive commemorations for his 799 AD death.
Sunni militants, including those linked to Al-Qaeda, view Shiites as apostates and often target them for attacks. However, no group immediately claimed responsibility for Sunday's bombing.
Violence in Iraq has risen sharply, with May being the deadliest month since 2008, as persistent political disputes have given fuel and room for militants to increase their activities.
There has been a heightened level of attacks since the beginning of the year, coinciding with rising discontent among the Sunni Arab minority that erupted into protests in late December.