One girl student was killed while dozen other students of Vidhaya Sager High School, Jamua were injured when a auto turned turtle at Jamua of Giridih district here on Monday morning, police said. The mishap took place when a auto carrying dozen girls student was on its way to the school. The injured were rushed to nearby private hospital where one girl declared brought dead by the doctors.The others students were discharged from the hospital after giving first aid. A case has been registered with Jamua police station of negligent driving against driver.