BAGHDAD : A suicide bombing targeting Shiite Muslims killed at least two people in Baghdad on Sunday, officials said, a day after the deadliest attack to hit the Iraqi capital in months.

The bombing in central Baghdad, which targeted a tent where Shiites distribute food as part of annual religious commemorations, also wounded at least four people, officials said.

There was no immediate claim of responsibility for the attack, but the Islamic State jihadist group frequently carries out suicide bombings targeting Shiites, whom it considers heretics.

The blast came a day after an IS-claimed suicide bombing at a funeral killed at least 34 people - the deadliest attack in Baghdad since another IS suicide bombing left more than 300 dead in early July.

The attacks come as Iraqi forces prepare for an offensive in northern Iraq to retake Mosul, the last IS-held city in the country, after regaining much of the territory the jihadists seized in 2014 and 2015.

The launch of the operation is expected to be announced soon, but it will mark only the start of a battle that is likely to be the most difficult and complex yet in the war against IS.