BAGHDAD (AFP) - A bombing targeting Shi'ites in Baghdad killed at least five people and wounded 14 others on Sunday (Oct 9), Iraqi officials said, an attack claimed by the Islamic State extremist group (ISIS).

The attack struck the Baghdad Jadida area near a refreshments tent for Shi'ites taking part in annual commemorations of the death of Imam Hussein, a revered figure in Shi'ite Islam.

ISIS, which frequently targets Shi'ite Muslims, whom it considers heretics, issued a statement claiming the attack and said it was carried out by a suicide bomber - an account confirmed by two interior ministry officials.

But a medical officer and people at the scene of the attack said it was a roadside bomb, not a suicide bomber - a repeat of differing accounts of another bombing in the same area at the end of last month.

Unusually, there were also two different versions of the ISIS claim posted online on Sunday: one which gave the correct location and another saying it had taken place in Shaab, an area across the city.

Iraqi forces are preparing for a push in northern Iraq on Mosul, the last ISIS-held city in the country, after regaining much of the Iraqi territory the militants seized in June 2014.

But ISIS has maintained the ability to carry out attacks in government-controlled areas even as it loses ground.