Four people, including a septuagenarian woman, were found dead with their throats slit at a house in Behala on the southern fringes of the city on Thursday night.
The alarm was raised by a physiotherapist who came to the house on Biren Roy Road (east) area to see one of the victims - Gouri Bhattacharjee, aged around 75, at 8 pm. He alerted the neighbours when he found the front door of the house open.
Police said besides the bodies of Mrs Bhattacharjee and her 50-year old son, her nurse and a domestic help were also found dead with throats slit in the same house. While the bodies of the mother and the son were discovered on the first floor of the house, the maid was found locked in a kitchen on the ground floor and the body of the nurse was discovered in the dining room.
Police are yet to find any clue on the assailants and their motive. Though sources say, the attackers could be professional killers. According to reports, there were no signs of burglary as nothing looked missing from the house.
Mayor Sovan Chatterjee, who visited the spot, said it was apparently a case of murder from the way the bodies were discovered with deep gashes on throats. Commissioner of Police RK Pachnanda, who inspected the place, said the matter was being investigated.(With inputs from PTI)