Those exposed while in the womb or during early childhood to radiation from the atomic bombs dropped during World War II said they are determined to demand at the Nobel Peace Prize award ceremony Tuesday that nuclear weapons be abolished.

Such people, known as the youngest hibakusha, are among the delegates from Nihon Hidankyo, an atomic bomb survivors group based in Hiroshima and Nagasaki prefectures, who arrived in Oslo on Sunday to collect the prize at the ceremony in the Norwegian capital.

The youngest hibakusha include Jiro Hamasumi, 78, an assistant secretary-general of Nihon Hidankyo. His mother was pregnant with him for three months when she experienced the atomic bombing of Hiroshima Prefecture on Aug. 6, 1945.