Tokyo plans to call on Pyongyang to provide more convincing answers to 150 questions and issues it raised in 2002 over North Korea's abductions of Japanese, a government source said Saturday.

Japan will bring up the matter during talks with North Korea in the hope that it can clarify issues that were not fully addressed regarding Japanese kidnapped by North Korean agents in the 1970s and 1980s, the source said.

The move comes as North Korea, based on an agreement with Japan after intergovernmental talks in late May, said it will set up a special committee to reinvestigate the whereabouts of the abductees.