A gang hacked to death an All India Anna Dravida Munnetra Kazhagam functionary in Kundrathur here on Wednesday evening. The victim, A.Mathan (32), was the area secretary of the AIADMK in Kezhuthipettai, police sources said.

Mathan was standing in front of a teashop on Kundrathur-Sriperumbudur Road when a gang of about 10 persons armed with deadly weapons came in a jeep and hacked him indiscriminately.

He died on the spot. Though local people claimed to have heard an explosion, police officials said no bombs were hurled.

“There was a long history of enmity over illegal sand quarrying in the Chembarapakkam lake between two groups. We have formed special teams to investigate,” Chennai Suburban Police Commissioner Karan Singha said.

Police officials said the accused persons belonged to the Dravida Munnetra Kazhagam. Mathan's father Anbu, also an AIADMK functionary, was murdered in 2003.

“There was a simmering difference between the two groups. We had a team of police personnel posted in the area as part of the security arrangements. By the time police could reach the spot, the accused managed to escape,” a police official said.

The body was shifted to the Government General Hospital for post-mortem.