At least 20 people have been killed and more than 200 injured after an earthquake struck south-west Pakistan, Disaster Management Authority Director General Naseer Nasir says.
The earthquake, with a magnitude of 5.7, struck near the city of Harnai in the early hours of Thursday while people were sleeping.
Rescue workers said the dead were mostly women and children.
The quake was relatively shallow at 20 kilometres, with an epicentre 102 kilometres east of the provincial capital of Quetta, said the US Geological Survey.
More than 100 mud houses collapsed and many more were damaged, including government buildings.
Hundreds of people were rendered homeless, Sohail Anwar, deputy commissioner in the city of Harnai, told Reuters.
Social media showed houses shaking and light fittings swaying as the quake struck, and later stunned residents gathering in the street in the dark.
The injured were rushed to hospital, while some were treated on stretchers in the street under phone torch light.
A 7.7-magnitude earthquake hit Quetta in 1935, killing between 30,000 and 60,000 people, making it one of the deadliest quakes to hit South Asia in recorded history.