Behrangi was only twenty-nine when drowned in a swimming accident in Aras River in September 1968. It is commonly believed that SAVAK, Shah’s security service, was behind this accident. At the time, his most famous children's stories, including "Ma’hi-e Sia’he Kochoulou" (The Little Black Fish), his most famous work, were at the press; they were published posthumously. Later in 1969, "24 Sa'at Dar Khab Va Bidary" (24 Restless Hours) and "Yek Hulou, Yek Hezar Hulou" (One Peach, A Thousand Peaches), two of his other works were published.