朝鲜中央通讯社宣布成功进行核试验，没有辐射泄露

SEOUL, South Korea (AP) -- South Korean government officials said North Korea performed its first nuclear weapons test Monday, the South's Yonhap news agency reported

North Korea's official Korean Central News Agency (KCNA) reported the country has performed a successful nuclear test.

According to KCNA, there was no radioactive leakage from the site.

South Korean officials could not immediately confirm the Yonhap report.

South Korean President Roh Moo-hyun convened an urgent meeting of security advisers over the issue, Yonhap reported.

The North said last week it would conduct a nuclear test as part of its deterrent against a possible U.S. invasion.