(CNN) -- Missile and launch components have been moved to the east coast of North Korea in the "last few days," a U.S. official with direct knowledge of the information told CNN on Thursday. This comes as indications emerged that North Korea, which unleashed another round of scathing rhetoric accusing the United States of pushing the region to the "brink of war," could be planning a missile launch soon. The components, the official said, are consistent with those of a Musudan missile, which has a 2,500-mile range, meaning it could threaten South Korea, Japan and Southeast Asia.