KHAIRPUR: A man was killed and three students were injured when a motorcycle rickshaw they were traveling in collided head-on with a trailer on the National Highway near Gambit on Tuesday. Police said that the three-wheeler carrying schoolchildren collided head-on with the trailer on the National Highway near Gambit. As a result, rickshaw driver identified as Ameer Bux Channa was killed and three students Zain Ali,12, Sajid Ali, 9, and Shasuddin Rajper, 8, were injured. The injured were shifted to Gambat Hospital while the body was handed over to the heirs. Police impounded the trailer while the driver managed to escape.