Japan’s cabinet adopted a list of embargoed luxury items to North Korea today and approved a ban on materials related to weapons of mass destruction as part of sanctions against Pyongyang after its nuclear test.

Japanese prime minister Shinzo Abe agreed with US President George Bush to take “decisive action” against North Korea at the UN Security Council over its nuclear weapons test.

US government officials said a wide range of agencies were looking into claims by North Korea that it had performed its first-ever nuclear test today.