Members of the Ainu Association of Hokkaido and the Enciw Bereaved Association, a group of descendants of Ainu people who lived on Sakhalin, visited Australia. They received the four remains from the National Museum of Australia in Canberra and the Museums Victoria in Melbourne, which had kept them. After the Australian side offered to return the remains to Japan, the government had been doing the necessary procedures. There are records suggesting Yoshikiyo Koganei (1859–1944), a professor of anatomy at Tokyo Imperial University (now the University of Tokyo), and another professor had donated the remains to Australian researchers prior to 1940, according to the Comprehensive Ainu Policy Office at the Cabinet Secretariat. It is believed that the remains of one person that Museums Victoria had kept were excavated near the mouth of the Poronay river in the southern part of Sakhalin in 1936.