The space agency will soon send up more such satellites to continue securing surveillance capabilities over South Korea and elsewhere, state media reported.
North Korea successfully placed its first spy satellite in orbit on Tuesday, its space agency said, defying international condemnation from the United States and its allies.
Officials in South Korea and Japan, which first reported the launch, said they could not immediately verify whether a satellite was placed in orbit.
North Korea had earlier notified Japan that it planned to send up a satellite between Wednesday and December 1, after two failed attempts to launch what it called spy satellites earlier this year.
