NEW DELHI, March 6 -- Two women, sisters aged 34 and 28, were found dead on Thursday evening while their mother was found unconscious inside their residence in south Delhi's Malviya Nagar, with police suspecting it could be a case of murder-suicide instigated by their mother, as per an initial investigation. Investigators said they suspect the mother, 54, killed her daughters, one by one, and then tried to kill herself, albeit unsuccessfully. The police said the Malviya Nagar police station received a call around 6.10pm about a door of a residence not being opened despite repeated attempts by family members to gain access. A police team rushed to the spot and found the main door locked from the inside. After forcing entry, police said, offi...