Using the phone records, they zeroed in on Gorak Singh. The police said Gorak Singh and his associates had acquired mobile SIM cards using fake identity cards from a shop at Triplicane. Gorak Singh’s associates managed to get employment at a nearby restaurant. Gorak Singh was earlier employed with a leading jewellery showroom on Habeebullah Road. After the police took Gorak Singh into custody, he confessed to carrying out the crime with the help of his associates from Nepal. He said the trio entered the house only to burgle the victim and were forced to kill her when she tried to raise an alarm. The assailants hit her on the head with a plastic bucket, held her down and smothered her to death. The gang were only able to loot Rs 2 lakh from the house and Gorak Singh took Rs 45,000 as his share, which the police later recovered. The police said Shantha would rarely communicate with her relatives and neighbours. They added that she had exchanged old notes to the tune of Rs 4 lakh with the Reserve Bank of India about a year ago and used that money for her daily expenses. Most of her money was stored in banks. She had Rs 18 lakh in two bank accounts.