"Pakistan regrets that the government of DPRK has conducted an underground nuclear test today," Foreign Office spokesman Moazzam Khan said in a brief statement.
He said Pakistan "believes that all countries should comply with their respective international obligations".
Islamabad supports a "nuclear weapons free Korean peninsula as agreed by all parties in the Framework Agreement of 1994 and reaffirms its support for the Six-Party Talks process", Khan said.
Disgraced scientist A Q Khan, considered the father of Pakistan's nuclear bomb, played a key role in the illegal transfer of atomic technology and equipment, including centrifuges used to enrich uranium, to North Korea.
Though Khan confessed to running a clandestine nuclear proliferation ring on state-run television in 2004, the current Pakistan Peoples Party-led government has removed most of the restrictions on his movement.
Islamabad: Pakistan Tuesday regretted the atomic test conducted by North Korea, saying all countries should comply with their international obligations on nuclear issues.
First Published: Tuesday, February 12, 2013, 19:45