At least 40 people are reported to have died after two bombs exploded at a shrine in eastern Pakistan.
Some 100 people have also been wounded in the attack in Dera Ghazi Khan.
The shrine is used by the Sufi Muslim community.
The Taliban has claimed responsibility for the attack.
Al-Qaeda-linked Taliban militants dislike the unorthodox Sufi interpretation of Islam.
Sufi targets have been attacked in the past in Pakistan.