The body of a woman who may be one of the missing people from a tour boat that sank off Hokkaido has been found washed ashore on Kunashiri Island, one of four Russia-controlled, Japan-claimed islands, the Japan Coast Guard said Friday.

The body was found May 6, according to information provided Tuesday by Russian authorities, the coast guard said. Twelve passengers remain unaccounted for, with none found since April 28, five days after the boat went missing. Fourteen people have been confirmed dead.

The body, which had no personal belongings on it that could lead to identification, was taken to a hospital in Furukamappu, known as Yuzhno-Kurilsk in Russia, on the island, according to the coast guard.