North Korea could launch a rocket that it says will carry an earth observation satellite as soon as Sunday, bringing forward and shortening the time frame for the launch, the Japanese and South Korean governments said on Saturday.
North Korea had earlier told the International Maritime Organization it would launch the rocket some time between Feb. 8 and Feb. 25, triggering international opposition from governments that see it as a long-range missile test.
Japan and South Korea said North Korea had issued a Notice to Airmen that the launch would take place some time between Sunday and the following Sunday, Feb. 14. The International Maritime Organization, a United Nations agency, also said on Saturday it had received a notification from North Korea of the change.
Isolated North Korea says it has a sovereign right to pursue a space program. But it is barred under U.N. Security Council resolutions from using ballistic missile technology.
Tension has been high on the Korean peninsula following the North's fourth nuclear test, on Jan. 6. A rocket test now would compound fears about North Korea putting a nuclear warhead on a missile that could reach not only South Korea and Japan but possibly even the west coast of the United States.
North Korea last launched a long-range rocket in December 2012, sending into orbit an object it described as a communications satellite.
The new time frame was set amid rising expectations that a launch was likely to happen soon, with U.S. government sources on Friday saying North Korea could be ready by the U.S. Super Bowl kickoff on Sunday, which will be Monday in Korea.
Satellite images taken this week of North Korea's Sohae rocket launch site show apparent fueling activity, seen in the past shortly before a rocket launch, said Washington-based 38 North, a North Korea-monitoring project.
North Korean state media has not reported on the changed schedule.
On Friday, President Obama spoke by telephone with President Xi Jinping of China, North Korea's main ally and neighbor, and agreed that a North Korean launch would represent a "provocative and destabilizing action," the White House said.
Obama and Xi also said they would coordinate efforts to respond to North Korea's nuclear test last month and said they would not accept North Korea as a nuclear weapon state.
"The leaders emphasized the importance of a strong and united international response to North Korea's provocations, including through an impactful U.N. Security Council Resolution," the White House said.
Chinese Foreign Minister Wang Yi criticized North Korea in remarks made on Friday in Namibia, according to a report released on the Chinese foreign ministry’s website, calling on the U.N. Security Council to take further action.
The United States and China have appeared divided over how to respond to North Korea, with Washington urging tougher sanctions and Beijing stressing the need for dialogue.
Japan has said it would shoot down the rocket if it threatens the country, and on Saturday accelerated the deployment of two additional PAC-3 missile units in response to the revised launch time frame, a Japanese defense ministry official said.