The Japanese woman abducted to North Korea who was not on Tokyo's official list of 11 is probably a nurse from Sado Island in Niigata Prefecture who vanished along with her mother in 1978, sources said Friday.

The woman, identified by Pyongyang as Hitomi Soga, vanished along with her mother, Miyoshi, in August 1978 when she was 19, the sources said. Her father lives alone on Sado Island.

Revelations that Soga is alive in North Korea came in Pyongyang's admission Tuesday that its agents had abducted 13 Japanese, eight of them have died and five, including Soga, are still alive.