Police said the 29-year-old auto driver died on the spot.
The gang who had come in a car, had made enquries about his whereabouts located him and then hacked him to death.
His relatives and friends blocked road traffic near thatchnallur, demanding arrest of the culprits. They also pelted stones at three government buses and a lorry,and forced closure of the shops in the area.
Armed police personnel rushed to the spot and persuaded them to disperse. But as tension continued to mount in the area, reinforcement were sent, police said.