The incident occurred when two groups of people clashed during a temple festival at Seyyamangalam. There was also dispute between the groups over desilting the temple tank.
Inspector Balamurugan along with others rushed to the spot and tried to pacify them. One of the group members Arunachalam mistook that the Inspector had come there to arrest them and ran on seeing him when he fell and got injured.
Balamurugan suffered head injury and fainted. He was taken to a hospial, police said.
Two others injured in the clash.
Police registered cases against about 50 persons including 16 women under various sections of IPC including attacking the policemen and preventing them from discharging their duty.