Debris from a rocket launch planned by North Korea next month could cause casualties, a senior U.S. military official said Wednesday.

Acting Assistant Secretary of Defense for Asia-Pacific Security Affairs Peter Lavoy said North Korea has indicated the rocket will be launched southward, but the U.S. lacks confidence about the rocket’s stability and where the impact will be.

He said it is probably intended to land somewhere close to the Philippines or maybe Indonesia. He said South Korea and the Japanese island of Okinawa could also be affected.

``A number of countries are potentially affected,’‘ Lavoy told the House Armed Services Committee. ``The debris could fall on their countries; could cause casualties.’‘

North Korea says the rocket will be launched in mid-April to mark the centennial of the communist nation’s founder and to put an observation satellite into space.

The United States and its allies view the launch as a cover for testing long-range missile technology, and violates a U.N. ban.

``This is now an issue that not only concerns the South Koreans and, of course, us and the Japanese,‘’ Lavoy said. ``Everybody in Asia-Pacific has become concerned about North Korea’s growing missile capability, especially as they’re continuing to develop their nuclear weapons capability.‘’

In 1998, North Korea tested a long-range missile that hurtled east over Japan. Experts say a new launch site in North Korea’s west allows a flight path that could avoid flying over other countries.

North Korea also conducted long-range rocket tests in 2006 and 2009, and the latest test could demonstrate if it is closer to perfecting a multi-stage rocket that could hit the United States. North Korea has also conducted two nuclear tests, but is not believed to have mastered how to fit a nuclear weapon onto a missile.

Gen. James D. Thurman, the commander of the 28,500 U.S. forces in South Korea, said that ``left unchecked’‘ the development of North Korea’s missile capability would pose a serious threat to the U.S. but he declined to specify at an open hearing how long that might take.

He viewed the planned launch as an attempt to demonstrate the ``bona fides‘’ of impoverished North Korea‘s new government, under Kim Jong-un, who took power after the death of his father and long-time ruler Kim Jong-il.

``They can’t meet the needs of the population,‘’ Lavoy said, ``so they resort to provocative behavior.‘’

On diplomatic efforts to get North Korea to reconsider the launch, Lavoy said the U.S. was dissatisfied with China’s attempts so far to pressure its North Korean ally to reform and abide by norms of international conduct, and urged it to do more.

``We hope that China will take a more constructive approach,‘’ he said.

North Korea has vowed to go forward with the launch. It says the satellite it sends into space will estimate crop production and analyze natural resources. (AP)