The Democratic People's Republic of Korea (DPRK) on Sunday launched a long-range rocket as planned, Yonhap news agency reported citing South Korea's defense authorities.

The rocket was fired at about 9:30 a.m. local time (0030 GMT) from the DPRK's Tongchang-ri launch station on its west coast.

The South Korean military detected the rocket just a minute after the launch with its surveillance assets, seeing the rocket succeed in its first-stage separation.

The first stage of the rocket fell on western waters of South Korea. Additional debris landed on waters near the country's southern resort island of Jeju.

The rocket disappeared from radars of the South Korean military at 9:36 a.m., the military said, noting that more verification will be needed to confirm the final success of the rocket launch.

South Korean President Park Geun-hye called an emergency meeting of the National Security Council (NSC) right after the rocket launch to discuss countermeasures.

Seoul's foreign ministry reportedly requested an emergency meeting of UN Security Council, which bans the DPRK from testing any of its ballistic missile technologies.

There has been no damage reported from civil aircrafts and shipping, South Korea's transport ministry was quoted as saying.

South Korea and the United States are jointly assessing whether the DPRK's rocket launch succeeds.

CNN: Success of "missile" test unknown

Earlier: DPRK announces success of first H-bomb test

The Democratic People's Republic of Korea announced Wednesday that it has successfully carried out its first hydrogen bomb test.

The "total success" of the test, which took place at 10:00 a.m. Pyongyang time (0130 GMT), meant that the DPRK has "proudly joined the advanced ranks of nuclear weapons states possessed of even H-bomb," Pyongyang said in a statement carried by the state-run KCNA.

According to the statement, DPRK top leader Kim Jong Un ordered the H-bomb test on Dec. 15, 2015, and signed the final written order on Sunday.

The test has "proved the technological specifications of the newly developed H-bomb were accurate and scientifically verified the power of smaller H-bomb," said the statement.

The DPRK claimed that the test was conducted "in a safe and perfect manner" and that no adverse impact was caused on the environment.

It added that its development of nuclear weapons is aimed at smashing the US hostile policy against it, and stressed that the DPRK would not resort to nuclear weapons unless its sovereignty was infringed on.

Earlier in the day, the China Earthquake Network Center said a 4.9-magnitude earthquake jolted the DPRK at 0130 GMT at a depth of 0 km.

The US Geological Survey, which also reported the temblor but initially put the magnitude at 5.1 and the depth at 10 km, later revised the depth to 0 km.

The DPRK's H-bomb test apparently runs counter to relevant UN resolutions and the internationally backed Korean Peninsula denuclearization efforts, and is set to cause repercussions.

China has always pushed for the denuclearization of the Korean Peninsula, maintaining that all relevant parties should refrain from unilateral moves detrimental to regional peace and stability.