At least 28 people were killed and 54 others injured when two bombs exploded in central Baghdad, Iraqi officials have said.

The attacks happened early on Saturday morning in al-Sinak, a busy market selling car accessories, food and clothes as well as agricultural seeds and machinery.

Details were sketchy in the immediate aftermath.

Police initially said a pair of back-to-back roadside bombs exploded. But a police official later said that first a roadside bomb exploded and then a suicide bomber detonated his device amid the crowd that had gathered.

Finally police concluded that the carnage was the work of a pair of suicide bombers.

No group has claimed responsibility for the blasts, but the Islamic State group has launched near-daily attacks in the capital in recent months.

Islamic State later claimed responsibility for the blasts in a statement posted by its Aamaq news agency, confirming that the attacks were made by a pair of suicide bombers.