Two suicide attacks have targeted police checkpoints in commercial areas in Iraq's capital Baghdad, killing at least 14 people.

Police said both attacks on Thursday morning were carried out by bombers on foot, wearing explosives-laden vests.

One bomber struck in Baghdad's Bab al-Sharji area, killing eight civilians and a police officer there. Twenty-one were wounded in that explosion.

The second bomber hit in al-Wathba Square, killing five people, including two policemen, and wounding 12.

Two medical officials confirmed the casualty figures.

No group immediately claimed responsibility for the attacks, which bore the hallmarks of the Islamic State group.