Kolkata: The initial post-mortem report of Sikha Mukherjee (70) found dead in a decomposed condition inside a locked room at her residence at Madan Dutta Lane in Bowbazar, shows that death was possibly due to an injury that she received on her head. The cops, thus, are likely to initiate a case under the murder section.Police said they are looking into the role of the son, Abhishek Mukherjee (39) who...