Kolkata: Mystery shrouds the death of two sisters whose bodies were with their throats slit inside their house at Barbaria village under Bhawanipur police station in Haldia.The incident occurred on Sunday evening. The victims have been identified as Sima Das (15) and her younger sister Pooja Das (10). Sima was a student of class IX, while Pooja was studying in class V. According to the preliminary investigation, police suspect that the victims’ father, Biplab Das, who is suffering from mental depression, might have carried out the murder. He has been absconding since the incident took place. The motive behind the murder is yet to be confirmed by the district police. According to police sources, the two sisters on Sunday evening requested their mother, Sagarika to prepare chicken. As desired by her two daughters, the woman went to a local market to bring meat. When she returned home, she found that the main door of the house to be open. As soon as Sagarika stepped into the house, she found the two girls lying in a pool of blood on the floor. On hearing the screams of the mother, locals rushed to the spot. They took the injured victims to Haldia sub-divisional hospital where the doctors pronounced both of them brought dead. The locals reported the matter to the police station following which police reached the spot. The investigating officers have recovered a knife smeared with blood from inside the room. The officers have also collected some samples from the room. The victims’ mother lodged a specific complaint against her husband. The woman also told police about the accused and his mental depression after he lost his job. The district police have started a detailed probe into the incident. They are yet to confirm the motive behind the murder.