Devinder Sivia, an Indian-origin Mathematics lecturer arrested in connection with the death of his colleague in Oxfordshire, was released on bail until April 18, the police said. The incident has shocked the academic community in Oxford. Sivia, 49, and victim Professor Steven Rawlings, 50 were described as close friends for decades and who co-wrote a book. Rawling's body was found in Sivia's house in Southmoor. There is no charge against the Indian-origin lecturer Sivia. Linda Davey, 64, Rawling's older sister, said that he was not the type of man to get into an argument over anything. She said: "They have been friends for 30 years. We can't think that there was any kind of fight. We can only assume that it was a terrible accident. Steven was big, but he was gentle."