North Korea Is Fueling Rocket, U.S. Military Says

WASHINGTON (CNN) -- North Korea has begun fueling its long-range rocket, according to a senior U.S. military official.

The fueling signals that the country could be in the final stages of what North Korea has said will be the launch of a satellite into space as early as this weekend, the senior U.S. military official said Wednesday.

Other U.S. military officials said the top portion of the rocket was put on very recently, but satellite imagery shows a shroud over the stage preventing a direct view of what it looks like.