Kolkata: Mystery shrouds the death of a 65-year-old woman whose body was found hanging in her own flat in Sahid Nagar area of Dhakuria on Sunday morning.Police said the victim Dipti Moitra (65) used to stay alone at her flat as her two sons live in Mumbai.The victim’s younger sister Kajol Das stays on the top floor of the same residential building. Das went to the victim’s flat on Sunday morning when she found her hanging.The victim’s younger sister immediately informed the matter to Garfa police station. After being informed, police reached the spot and recovered the body. The investigating officers found a suicide note from her room. Also Read – Rain batters Kolkata, cripples normal lifeAccording to the police, the suicide note that has been recovered from her room says that none was responsible for her death.The victim’s younger sister told police that she came downstairs as she wanted to go to a local shop.As she was going down stairs, she saw the deceased standing at the door and by the time she went closer, she figured that the victim was not standing but hanging from the front door.During interrogation, the younger sister claimed that she had called other inmates of the residential apartment immediately after the incident. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedPolice are awaiting the post-mortem report which might throw some light on the nature of her death. Police are examining the suicide note.The investigating officers are not ruling out a foul play behind the death of the victim.Some of the circumstantial evidence, however, suggests that the elderly woman have committed suicide.The reason behind her suicide is yet to be determined by the police.They are interrogating some of the neighbours of the victim and looking into if the victim had been suffering from depression. A case of unnatural death has been started by the police.