"As regards any limited information we had in the past it has been shared with the Korean government," Prime Minister Shaukat Aziz told reporters on the first full day his visit to South Korea. "It's a closed chapter. Pakistan is against proliferation in any form."

Pakistan's relationship with North Korea was a focus of international attention after revelations that A.Q. Khan, the South Asian nation's top nuclear scientist, provided nuclear weapons technology to the communist country as well as to Iran and Libya.