Radio Free Asia says that North Korea is mulling ways to disrupt the Group of 20 Seoul Summit in November.

The report said the North's National Defense Commission held a meeting to discuss measures to this aim.

One source who visited Pyongyang to attend a Workers' Party conference conveyed this information to the Seoul-based NK People's Liberation Front, which is an organization formed by former North Korean military officials who defected to South Korea.

The source said the National Defense Commission defined the G20 Summit as a political conspiracy of global financial powers to isolate and pressure North Korea.

The commission reportedly held an emergency secret meeting early this month chaired by North Korean leader Kim Jong-il's third son and apparent political heir, Jong-un.