Biharsharif, Feb 21 (PTI) Three persons, including a girl student, were killed and 12 others injured in road accidents in Bihar's Nalanda district today, police said. Sanchala Kumari, a matriculation examinee, was crushed to death by a tractor near Golapur village under Deepnagar police station area. In another accident, two motor-cyclists identified as Sanjay Sav and Sanjeet Kumar were killed under Deepnagar police station area after a speedy truck knocked down their two-wheeler, police said. About 12 passengers were injured after a bus in which they were travelling lost control and overturned near Doia village under Nursarai police station area, they said. PTI COR KDK PR