Two car bomb blasts targeting Shias in Baghdad ahead of the major Ashura religious commemorations have killed at least 19 people.
The first struck near a tent from which people were distributing tea and water in the Al-Ilam area in southwest Baghdad, killing 13 people.
Security and medical officials said the blast also wounded at least 29 people.
Another car bomb exploded in the majority Shia Sadr City district of northeast Baghdad, killing six people and wounding 19.
Again the target was a tent set up to host pilgrims.
Hundreds of thousands of Shia pilgrims are travelling to the Iraqi shrine city of Karbala for Ashura, which marks the death of Imam Hussein, one of the most revered figures in Shia Islam.
Pilgrims have been targeted during Ashura before, but this year's commemorations, which peak on Tuesday, face even greater danger, with the self-proclaimed Islamic State group in control of large areas of the country.
Elsewhere, IS has in recent days executed more than 200 members of an Iraqi tribe that fought against it, officials and a tribal leader have said.
Accounts varied as to the exact period in which the Sunni Albu Nimr tribesmen were killed in various areas of Iraq's Anbar province.
However, the executions were all said to have been carried out within the last ten days.
A police spokesman said more than 200 people were killed, while Faleh al-Essawi, the deputy head of the Anbar provincial council, put the toll at 258.
The victims, "including women and children, all of them from the Albu Nimr tribe," were killed "during the past three days," Mr Essawi said.
"Anyone who carries the Nimrawi family name on his personal ID" is targeted and killed by IS, he added, referring to the name carried by members of the tribe.
A tribal leader said that 381 of its members were killed "from the 24th of last month until today".
IS has overrun large areas of Anbar, and the killings are likely aimed at discouraging resistance from powerful local tribes, who will be key to any successful bid to retake the province.
Pro-government forces have suffered a string of setbacks in Anbar in recent weeks.
That has prompted warnings that the province, which stretches from the borders with Jordan and Saudi Arabia to the western approach to Baghdad, could fall entirely.
IS did not immediately claim responsibility for the killings, but it has executed hundreds of people in areas of Iraq and Syria that it controls.
