Iraqi officials say the death toll from a suicide bombing on February 12 has risen to at least 33.
In one of the deadliest attacks seen in Iraq this month, the bomber detonated his explosives on a bus carrying Shi'ite pilgrims as they were returning from a religious ceremony.
The blast, which took place near the city of Samarra just north of Baghdad, left dozens wounded.
Shi'ite pilgrims are often targeted by Sunni militant groups.
compiled from agency reports