A car bomb at a crowded Baghdad market has killed at least 64 people, officials say, in one of the worst recent attacks in the Iraqi capital.
At least 87 others were wounded in the blast in the Shia Muslim district of Sadr City during the morning rush hour.
So-called Islamic State (IS) said it had carried out the attack.
There are fears the death toll could rise further.
According to the UN, at least 741 Iraqis were killed in April owing to ongoing violence, a sharp decline from the previous month.
In its monthly report issued on May 1, the UN mission to Iraq put the number of civilians killed at 410, while the rest were members of the security forces. A total of 1,374 Iraqis were wounded that month, it added.
In March, at least 1,119 people were killed and 1,561 wounded.
Baghdad remains the worst-hit area in terms of documented deaths, with 232 civilians killed and 642 wounded in April.