OKARA - A man and his three-year-old son were killed when the wall of their house collapsed in Sadr Bala Hathar village of Hujra Shah Muqeem on Wednesday. As a result of which, Naveed Dhol and his toddler son buried under the debris and died. In a road accident, Kalsoom Bibi was killed while her young son sustained injuries when a tractor trolley hit their motorcycle at Depalpur-Pakpattan road. Rescue-1122 shifted the dead and injured to hospital.