Iraqi officials say a car bomb explosion in a commercial, predominantly Shiite neighborhood of Baghdad has killed at least 14 people.

A police officer says the explosives-laden car went off Wednesday morning at a crowded outdoor market in Baghdad's eastern district of Sadr City. The explosion also wounded up to 40 people, several seriously, and there are fears the death toll will rise.

Two medical officials confirmed the causality figures. All officials spoke on condition of anonymity as they are not authorized to release information.

No group has claimed responsibility for the attack, which bore the hallmarks of the extremist Islamic State group that has been behind recent deadly attacks in the area. IS also controls significant areas in northern and western Iraq, including the second-largest city of Mosul.