A busy second-hand clothes market in the centre of Baghdad has been struck by two car bombs, with scores of people killed.
People rushed to take the injured to hospital, some carried away on carts.
Although ambulances hurried to the scene, many people were forced to take themselves or their relatives for treatment.
Distraught relatives and friends headed to hospitals to try to find out news of loved ones.
The bombing, the second major attack in the past week, came as extra US troops fanned out around Baghdad to try to improve security.
The attack hit a mainly Shia area of Baghdad despite strict security for a major Shia festival.