At least 22 people have been killed and 48 wounded by a suicide bomber outside a Shia mosque in the town of Hangu in north-western Pakistan.
The bombing took place as worshippers were leaving Friday prayers. No group has yet said it was responsible.
Police chief Mian Mohammad Saeed said a motorcycle carrying 7kg of explosives exploded in a narrow street at one of the exits of the Shia mosque leading to the Pat Bazaar.
In November, 23 Shia Muslims were killed by a bomb in the city of Rawalpindi and 19 pilgrims died in an attack on a bus convoy in Baluchistan last month.
More than 80 people died in twin blasts in a snooker hall in a Shia area of the city of Quetta on 10 January.