At least 53 people have been killed by a suicide bomber in an attack on Shia pilgrims in the southern Iraqi city of Basra.
Police and security sources say the attack was aimed at pilgrims marking the festival of Arbaeen, one of the main holy days of the Shi'ite calendar.
Medical sources in Basra say they have treated 91 wounded people.
The pilgrims were attacked at a checkpoint en route to a major Shia mosque in the Zubeir district, some 20km south-west of Basra, by a man wearing the uniform of a police officer.
At least 72 people were killed last week by bombs targeting Shia Muslims in southern Iraq and the capital, Baghdad. Forty-five of the victims were pilgrims in the city of Nasiriya.
