Kolkata, Sept. 21 -- A 27-year-old researcher allegedly died by suicide in his hostel room at Indian Institute of Technology (IIT) Kharagpur on Saturday, in the fifth suspected case of death by suicide at the premier institute this year, police officers said. The researcher, who was pursuing a PhD in Mechanical Engineering, was found dead in his room at the BR Ambedkar Hall, they said. "His parents could not reach him on the phone, and the door of his room was locked from the inside. Subsequently, police were informed, and they broke into the room to find his dead body inside," an IIT-Kharagpur spokesperson said. With this, a total of five students have died by hanging themselves at the institute since January....