Fifteen persons were injured in a head-on collision involving two government buses at Koliyanur near here in the early hours of Wednesday.
According to police, a State Express Transport Corporation (SETC) bus was going from Chennai to Peravurani when it collided head-on with a Chennai-bound TNSTC bus from Kumbakonam.
The injured were admitted to the Government Villupuram Medical College and Hospital (GVMCH) at Mundiyambakkam.
The Traffic police are investigating the incident.