23-year old constable Kannan had intervened in a quarrel between two groups during the consecration of a local temple at Chennampatti and pacified them two days ago.
Three members of a group, who got angry with the constable quarrelled with him when he was waiting at a bus stand beat him up last evening.
One of them hit the constable with a beer bottle, injuring him, police said adding he had been hospitalised.