The Group of Eight meeting of major industrialized countries will issue a statement at their summit this weekend in St. Petersburg, Russia, expressing concern over North Korea's missile tests and demanding Pyongyang halt further launches, a government source said Friday.

The leaders' statement at the St. Petersburg summit will say proliferation of weapons of mass destruction and the means of their delivery threaten international peace and security, the source said.

The statement on nonproliferation will stress the need to block technology transfers related to missile production, but without referring specifically to North Korea.