The Islamic State (IS) claimed responsibility for the double suicide bombing in the Iraqi capital, Baghdad, on Thursday that killed at least 32 people and wounded more than 100.
The attack targetted Shia Muslims, a statement from the Sunni Islamist militant group’s Amaq news agency said.
It was the biggest suicide attack in Baghdad in years.
The bombers blew themselves up among a crowd of shoppers at a second-hand clothes market in Tayaran Square.
The admission by the jihadist group, made via its accounts on the messaging app Telegram, came several hours after the attack.
On Thursday morning, the first bomber rushed into the Tayaran Square market and gathered a crowd around him by claiming to feel sick, an interior ministry statement said.
“He pressed the detonator in his hand. It exploded immediately and people were torn to pieces,” a stallholder told Reuters.
The second bomber blew himself up as others came to help the victims, according to the ministry.
Iraqi President Barham Saleh led condemnation of the latest attack, saying the government would “stand firmly against these rogue attempts to destabilise our country”.
Pope Francis, who plans to visit Iraq in March, sent a message to Mr Saleh “deploring this senseless act of brutality”.
The US, EU and UN also deplored the attack.
The last deadly suicide attack in Baghdad was in the same square in January 2018, when 35 people were killed.
Suicide bombings have become rare in Baghdad since IS was militarily defeated in the region at the end of 2017.
IS once controlled 88,000 sq km of territory from eastern Iraq to western Syria and imposed its brutal rule on almost eight million people.
Despite IS’s defeat on the battlefield, a UN report last August estimated that more than 10,000 IS fighters remained active in Iraq and Syria.
Sleeper cells continue to wage a low-level insurgency, operating mainly in rural areas and targeting security forces.