More than 30 people have been killed and dozens injured in a bomb attack on a religious procession in Pakistan's Punjab province, officials say.
The attack targeted Shia worshippers in the town of Dera Ghazi Khan. They were leaving a mosque when the bomb went off. It is not clear who carried out the attack or whether it was the work of a suicide bomber.
Sectarian tensions in southern Punjab have in recent years been aggravated by the growing strength of Sunni Taleban. Police are investigating whether the attack was carried out by a suicide bomber.
"It appears to have been a suicide bombing, as there was no crater in the aftermath of the blast," local police chief Masud-ul-Hasan said.
The BBC's Syed Shoaib Hasan in Islamabad says the banned Lashkar-e-Jhangvi, one of Pakistan's most ruthless militant groups, is blamed for most of the violence.
Lashkar-e-Jhangvi is a militant outshoot of the Sipah-e-Sahaba organisation which demands Pakistan be turned into a hard-line Sunni state.
Source: BBC