PYONGYANG, North Korea (REUTERS) - North Korean scientists and technicians behind the country's latest and biggest nuclear test were greeted by hundreds who lined the streets to congratulate them as they left Pyongyang on Monday (Sept 11), according to a video aired by state-run KRT.

Their latest hydrogen bomb is designed to be mounted on its newly developed intercontinental ballistic missile (ICBM). The scientists and technicians arrived in Pyongyang last Wednesday (Sept 6) and attended a banquet and concert with the state's leader, Kim Jong Un.

North Korea claims it tested an advanced hydrogen bomb on Sept 3, triggering a magnitude 6.3 earthquake - an explosion ten times more powerful than its last test, raising the stakes in its nuclear stand-off with the United States.

The UN Security Council is set to vote on Monday on a watered-down US-drafted resolution to impose new sanctions on North Korea over its latest nuclear test, diplomats said, but it was unclear whether China and Russia would support it.