On June 10, 1983, a dacoity was reported at Ennore. It was the beginning of deadly strikes in Chengalpattu, Tambaram, Guduvanchery, Chitlapakkam, Avadi, and Ambattur. Investigators found that a Delhi-based gang was behind it. Laxman Singh and five of his accomplices were awarded life imprisonment by the trial court at Poonamallee