At least 11 people have been killed in twin car bombings in the Iraqi capital Baghdad, local officials say.

They say about 30 people were injured in the morning blasts at a market in the predominantly northern Shia district of the city.

No group has so far claimed responsibility for the attack.

The Iraqi authorities have blamed Sunni insurgents linked to al-Qaeda for much of the recent violence in Iraq, stoking fears of a return to civil war.

The two bombs were set off just after 09:00 local time (06:00 GMT) at the market in the Khadimiya district.

The market was packed with shoppers at the time, reports say.

It is the last in a series of deadly attacks in Iraqi cities since the beginning of the year, which left scores of people dead.