A Corporation employee P. Selvam (42) of Pandulgudi was arrested on charges of assaulting five persons, including a police constable, at Jamburopuram market on Saturday night.
Police said that the Armed Reserve Constable, Balaguru (35), had questioned few strangers sitting near his house at around 9.30 p.m.
He was joined by few others, including his neighbour K. Kathiresan.
The strangers, including Selvam, who left the scene, came back with few more persons and started attacking the constable and others with clubs. Kathiresan sustained injuries on his head and Balaguru had injuries on his hand.
The Tallakulam police are on the lookout for others.