Police said Som Maya Lama of 34 years, her daughter Sushma Lama, 8, of Bimada, Lamjung and bus helper Sushil Shahi were killed in the mishap. Kallu Chaudhary of Nepalgunj was critically injured.
All injured are undergoing treatment in Lumbini Zonal Hospital, Butwal. Police have taken the driver under control for the investigation.
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