At least 39 people have been killed in a suspected suicide bomb attack at a mosque in the south-east of Iran.
The attack took place at Chabahar, in Sistan-Baluchistan province, near the Pakistani border.
The blast happened outside a mosque as pilgrims were marking the Shi'ite holy day of Ashura.
The militant Sunni Muslim group Jundullah claimed responsibility for the bombing.
A number of women and children are believed to be among the dead, the BBC reports. Many more people were injured.
Official news agency Irna quoted the head of the Chabahar Security Council, Ali Bateni, as saying there were two attackers and one had been arrested.