The bus was on its way to Khushab from Nowshera when the incident took place, Radio Pakistan reported.
The injured were immediately shifted to district headquarters hospital in Jauharabad.
On March 21, at least eight of a family, including two minor girls, were also killed and three others injured when a jeep plunged into a roadside gorge near Sangjora.
Read: Road accident: Eight of a family killed in Balakot
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