Those claims are as of yet unconfirmed.
"North Korea defied international warnings and fired a long-range rocket Wednesday, the second launch under its new leader and a clear sign Pyongyang is pushing forward with its quest to develop the technology needed to deliver a nuclear warhead.
Pyongyang’s state media quickly claimed that the country had successfully put a peaceful satellite into orbit with its long-range Unha-3 rocket — the North’s stated goal of the launch. But South Korea and Japan said they couldn’t immediately confirm that. The launch was something of a surprise, as North Korea had indicated technical problems with the rocket and recently extended its launch window to Dec. 29."