Kolkata, Aug. 14 -- A 30-year-old on-duty nurse has been found dead in a locked washroom at the state-run NRS Hospital in West Bengal's Kolkata, a police officer aware of the matter said on Thursday. According to police, her body was recovered by her colleagues the previous night, and a post-mortem examination was underway to ascertain the cause of death. State health minister Sharadwat Mukherjee and senior police officers visited the hospital on Thursday. "The nurse was on night duty on Wednesday when she disappeared around 9.40 pm. While looking for her, the hospital staff found the door of a toilet locked for an unusually long time. They shouted her name but there was no response. They broke the door and found her lying inside," a senior...