Two North Korean Musudan missiles have been withdrawn from a launch site in the eastern part of the country and sent to a storage facility, a U.S. official confirmed Monday.

The United States had been worried about the prospects of the regime firing the missiles.

For weeks last month, North Korea dished out daily sabre-rattling threats aimed at South Korea and the United States.

The North's rhetoric intensified after the U.N. Security Council voted in March to slap tougher sanctions on the regime and amid U.S.-South Korean military drills in the region.