North Korea said early Wednesday that it had successfully put its first military spy satellite into orbit, state-run media reported, after a rocket carrying the payload passed over the Japanese archipelago late Tuesday, triggering a strong condemnation from Tokyo.

Japanese officials, however, said that Tokyo was continuing to analyze the launch — Pyongyang's third attempt this year to put a spy satellite into orbit — but could not immediately determine whether the rocket launch or the satellite mission had been successful. The Pentagon also said it was still assessing whether the launch was successful.

South Korea, meanwhile, said Wednesday that it would partially suspend a landmark 2018 inter-Korean military agreement, and resume reconnaissance and surveillance activities around the border, the Yonhap news agency reported.