The girls fell on the conductor who was standing on the footboard.
Three girls and a conductor of a private bus were injured after they slipped and fell down from the vehicle at Karambakadu village near Peravurani in the district on Monday.
Police sources said a few metres after the bus left Karambadu stop one of the girls accidentally slipped on the other two girls when the driver apparently swerved the vehicle at a curve.
The girls - Divya (15) Oviya (18) and Sowmiya (15) - were taken to Peravurani Government Hospital, while the bus conductor Parthiban (22) who sustained grievous injuries was referred to Thanjavur Medical College Hospital for higher treatment, police sources said.
The accident took place in the morning when the girls were proceeding to their educational institutions.
Stay updated with all the Latest Trichy headlines here. For more exclusive & live news updates from all around India, stay connected with NYOOOZ.