North Korea says it conducted an important final-stage test for the development of reconnaissance satellites on Sunday. South Korea says the North fired two medium-range ballistic missiles on that day.

Monday's edition of the ruling party's newspaper says the National Aerospace Development Administration, or the NADA, conducted the test at the Sohae Satellite Launching Ground in the country's northwest.

The test apparently refers to North Korea's reported launches of two ballistic missiles on Sunday.

The country had test-fired what are believed to be long-range ballistic missiles from the launching ground. Pyongyang says they were satellites.

The paper also says the NADA has announced that it will finish the preparations for the first military reconnaissance satellite by next April.

The five-year national defense plan unveiled by North Korea last year included the development of such satellites.