He is said to have faced disciplinary action in his workplace earlier, after being found drunk at his job. He was also allegedly involved in some theft cases, the police said. On Sunday, when Vigneswaran came home, his mother served him poison-laced food and he subsequently died after consuming it, the police said. Later, the woman severed the head from the body and chopped off the limbs with a machete before dumping them off elsewhere, they said. Further probe is on.