9 December
NHK has obtained new images of the facility where North Korea claims it has conducted a test "of great significance" on Saturday.
The Middlebury Institute of International Studies at Monterey says a satellite image taken on Saturday shows several vehicle-like objects.
But on the next day, many were gone and the ground near the test site appears to be blown away.
The director of the East Asia Nonproliferation Program at the institute, Jeffrey Lewis, says that suggests North Korea tested a rocket engine.
-NHK
