A auto bombing on Monday evening in the Iraqi capital Baghdad killed at least 15 people and wounded 33, an interior ministry official told AFP.
The blast went off in a market in the mainly Shia Amil district in the south-west of the city, reports say.
There was no immediate claim of responsibility for the explosion, which bore all the hallmarks of a suicide attack by Islamic State of Iraq and the Levant (ISIL, also known as ISIS).
The attack occurred in the evening when a booby-trapped vehicle parking at a crowded marketplace detonated at the predominantly Shiite neighbourhood of Amil in southern Baghdad, the source said on condition of anonymity.
In that year, the jihadists took vast swathes of Iraqi territory north and west of the capital.
The incident comes as Iraqi forces assisted by the U.S. continue to battle extremists in Mosul.
The massive explosion destroyed several nearby shops and many stalls, along with damaging several nearby civilian cars and buildings, the source said.
Mr Abadi said in a video statement as he left Baghdad that his country was in "the final stages to eliminate IS militarily in Iraq".
Meanwhile, Islamic State has reportedly captured an Iraqi police colonel along with eight other officers on Monday during the ongoing battle for west Mosul, an Iraqi interior ministry official said as reported by Reuters.