Investigation points at medical negligence that led to amputation of the hand of a woman patient whose son is a soldier in the Indo-Tibetan Border Police on May 17. The probe panel stated that had the help of a vascular surgeon been sought in time, there could have been no need for amputation. The severed hand was to be sent to the FSL lab on Tuesday, but could not be sent without a letter from the CMO. According to police, no letter had been provided by the CMO yet.On Tuesday evening, police collected evidence from Krishna and Paras hospitals and Railbazar police station in charge Aman Singh issued notices to management of both hospitals for investigation. Police said details pertaining to BHT (behavioral health technician), CCTV footage, treatment details and statements of staff will be recorded soon.Doctors in the investigation committee stated that the patient Nirmala Devi had gangrene in her hand, which necessitated its amputation. Family members, on the other hand, alleged that during treatment in the presence of doctors at Krishna and Paras hospitals, color of the woman’s hand gradually began turning black and blue, while the swelling kept increasing continuously, a clear indication of gangrene or serious infection, yet the doctors dismissed it as common swelling.