The incident occurred when a passenger bus fell into deep excavation at Dhook Pathan.
Twenty passengers were killed and fifty two others injured when a passenger bus fell into a deep excavation at Dhook Pathan near Chakwal on Wednesday evening.
The bus, carrying eighty two passengers, was heading towards Raiwind from Kohat.
Chief Minister Punjab Shahbaz Sharif has expressed grief and sorrow over the loss of precious lives in the accident and directed concerned authorities to provide best medical treatment to the injured free of cost.