Pakistan has given South Korea all the information it has about suspected exchanges of nuclear technology with North Korea and considers the issue âa closed chapterâ, Pakistanâs prime minister said yesterday. Pakistan has been at the center of investigations into a nuclear black market that is suspected of skirting international sanctions and providing sensitive technology to Iran, Libya and North Korea. âAs regards to any relationship or interaction with North Korea, we have none any more,â Shaukat Aziz told a news briefing in Seoul, ahead of meetings with South Korean officials. âWhatever information we have, we have shared with our friends in South Korea,â Aziz said. âThis is a closed chapterâ. US officials have charged that the nuclear black market network run by disgraced nuclear scientist Abdul Qadeer Khan, the father of Pakistanâs atom bomb program, supplied North Korea with technology to produce highly enriched uranium (HEU) for nuclear bombs. The issue is critical because the United States has demanded at six-country talks that North Korea dismantle all of its nuclear activities, including the uranium enrichment program. North Korea has denied having any such program.