A suicide bombing claimed by the Islamic State jihadist group targeted Shiite Muslims in the Iraqi capital on Saturday, killing at least four people, security and medical officials said.
The bomber targeted a tent in the Iskan area of western Baghdad where Shiites were distributing food and drinks to pilgrims making their way to the shrine city of Karbala, south of the capital.
The attack also wounded at least 16 people, officials said.
IS issued a statement claiming the attack in which it boasted that the bomber had successfully passed security checkpoints to carry the attack.
The Sunni extremist group considers Shiites to be heretics and frequently targets them with bombings in Baghdad.
The latest attack comes as Iraqi forces close in on Mosul, the last IS-held city in the country, after regaining much of the territory that the jihadists had overran in 2014.