At least 70 Shia pilgrims have been killed in a truck bomb attack at a road stop in Iraq, officials say.

The blast struck at a petrol station and restaurant near al-Hilla, some 100km (60 miles) south of Baghdad.

The road stop was full of people returning from the Arbaeen pilgrimage in the city of Karbala. Iranians and Bahrainis were among the victims.

The Islamic State group said it carried out the attack, and claimed the death toll was more than 80.