The bus carrying pilgrims from Jhang overturned as its brakes failed.
Rescue officials reached the accident site and shifted the bodies and the injured to the DHQ hospital.
Doctors said the injured are out of danger.
The deceased were identified as Erum Shehzadi, Jannat Bibi and Umar Daraz.
In September 2011, 33 children were killed in a bus accident in Kallar Kahar. The bus was carrying 107 people despite having a capacity of 72.
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