A Japanese government delegation has arrived in Pyongyang to discuss North Korea's investigation into the fates of Japanese citizens who were abducted by the North's agents in the 1970s and 1980s.

The delegation that arrived Monday hopes to find out more about what happened to at least 12 Japanese citizens — and possibly dozens more — it believes were abducted by North Korea but whose fates remain unknown.

North Korea earlier agreed to re-open an investigation into the abduction cases. It has acknowledged abducting some Japanese and allowed five of them to return to Japan in 2002, but claimed that other abductees had died.