Minchinabad - A driver was killed while helper injured when a tractor-trolley overturned on Bahawalgar-Minchinabad Highway near Adda Chubyana here the other night. According to eyewitnesses, the driver lost control of the vehicle due to speeding and it overturned. –ReporterAs a result, the driver identified Anwar Pathan died instantly while his helper sustained serious injuries. The Loharka Police reached the spot and took the body and injured to the THQ Hospital.