BEIJING -- Japan's demands for fresh information on 10 Japanese citizens it says were abducted to North Korea remained unanswered as the two nations concluded two days of working-level talks here Thursday.

Japan proposed meeting again, possibly in September, and urged North Korea to thoroughly investigate and report then, Japanese officials said. North Korea replied that it will consider the proposal.

"We are not satisfied with the results of the investigation put forward at this time," Akitaka Saiki, deputy director general of the Foreign Ministry's Asian and Oceanian Affairs Bureau, told reporters after the talks.