North Korea says it detonated nuclear warhead

SEOUL, South Korea (AP) — North Korea's reported nuclear test explosion is drawing international condemnation.

China, the North's only major ally, issued a statement criticizing Pyongyang for carrying out a test with "disregard" for international objections. The statement says China "resolutely opposes" the test and calls on North Korea to stop any behavior that "worsens the situation."

France strongly condemned the nuclear test. It's calling on the United Nations Security Council to quickly face the issue.

The head of the International Atomic Energy Agency says North Korea's nuclear test, if confirmed, is in clear violation of numerous U.N. Security Council resolutions and in complete disregard of the repeated demands of the international community.

U.S. Secretary of State John Kerry, in Geneva, is expressing deep concern. Kerry says the U.S. is still trying to determine precisely what happened. Kerry didn't refer to the event as a nuclear test.