SEOUL, South Korea (AP) 鈥 A rocket launched by North Korea to deploy the country鈥檚 second spy satellite exploded shortly after liftoff Monday, state media reported, in a setback for leader Kim Jong Un鈥檚 hopes to operate multiple satellites to better monitor the U.S. and South Korea.

Monday鈥檚 failed launch came hours after leaders of South Korea, China and Japan met in Seoul in their first in more than four years. It鈥檚 highly unusual for North Korea to take provocative action when China, its major ally and economic pipeline, is engaging in high-level diplomacy in the region.

The launch drew rebukes from the North鈥檚 neighbors because the U.N. bans North Korea from conducting any such launches, viewing them as covers for

The North鈥檚 official Korean Central News Agency said it launched a spy satellite aboard a new rocket at its main northwestern space center. But KCNA said the rocket blew up during a first-stage flight soon after liftoff due to a suspected engine problem.

KCNA cited the unidentified vice director of the 香港六合彩挂牌资料 Aerospace Technology Administration as saying that a preliminary examination showed that the explosion was related to the reliability of operation of the newly developed liquid oxygen-petroleum engine. He said other possible causes will be investigated, according to KCNA.

Japan鈥檚 government briefly issued a missile warning for the southern prefecture of Okinawa, urging residents to take shelter inside buildings and other safer places. The warning was lifted later because the region was no longer in danger, Chief Cabinet Secretary Yoshimasa Hayashi said.

Japanese Defense Minister Minoru Kihara called the North鈥檚 launch 鈥渁 serious challenge to the entire world.鈥 The U.S. Indo-Pacific Command criticized the launch as a 鈥渂razen violation鈥 of U.N. Security Council resolutions and said it involved technologies that are directly related to North Korea鈥檚 intercontinental ballistic missile program. South Korea鈥檚 Unification Ministry called a satellite launch by the North 鈥渁 provocation that seriously threatens our and regional security.鈥

North Korea has steadfastly maintained it has the right to launch satellites and test missiles in the face of U.S.-led military threats. North Korea says the operation of spy satellites will allow it to better monitor the U.S. and South Korea and improve the precision-striking capabilities of its missiles.

During the trilateral meeting with Japanese Prime Minister Fumio Kishida and Chinese Premier Li Qiang earlier Monday, South Korean President Yoon Suk Yeol called for stern international action if North Korea went ahead with its launch plan.

Kishida, for his part, urged the North to withdraw its launch plan, but Li didn鈥檛 mention the launch plan as he offered general comments about promoting peace and stability on the Korean Peninsula through a political resolution.

Earlier Monday, North Korea had notified Japan鈥檚 coast guard about its planned launch with a warning to exercise caution in the waters between the Korean Peninsula and China and east of the main Philippine island of Luzon during a launch window from Monday through June 3.

Some observers say that North Korea鈥檚 satellite launch on the first day of its eight-day window might have been aimed at casting a chill over the Seoul-Beijing-Tokyo meeting and registering its displeasure with China. Kim Jong Un has been embracing the idea of a 鈥渘ew Cold War鈥 and seeking to boost ties with Beijing and Moscow to forge a united front against Washington, so China鈥檚 diplomacy with Seoul and Tokyo might have been a disturbing development for Pyongyang.

Kim鈥檚 primary focus in recent months has been on Russia, as Pyongyang and Moscow 鈥 both locked in confrontations with Washington 鈥 expand their military cooperation. China, which is much more sensitive about its international reputation, has joined Russia in blocking U.S.-led efforts at the U.N. Security Council to tighten sanctions on the North but has been less bold and open about supporting Kim鈥檚 鈥渘ew Cold War鈥 drive.

North Korea鈥檚 Foreign Ministry on Monday strongly criticized a joint statement issued by Li, Yoon and Kishida, calling it 鈥渨anton interference in its internal affairs.鈥 The ministry took issue with parts of the joint statement that said the three leaders re-emphasized their existing positions on the issue of denuclearization of the Korean Peninsula.

While North Korea focused much of its criticism on South Korea for allegedly being chiefly responsible for the statement, it鈥檚 still extremely rare for North Korea to slam a statement signed by China.

The failed satellite launch is a blow to Kim鈥檚 plan to launch in 2024 in addition to his country鈥檚 that was placed in orbit last November.

The November launch followed two failed liftoffs.

In the first attempt, the North Korean rocket carrying the satellite crashed into the ocean soon after liftoff. After the second attempt, North Korea said there was an error in the emergency blasting system during the third-stage flight.

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Yamaguchi reported from Tokyo.

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