The missile test in the DPRK was conducted just days after Pyongyang announced the prospect of an inter-Korean summit.
It is unclear whether the projectile was fired by a ballistic missile banned by UN Security Council resolutions and how many launches were made.
Three days earlier, Kim Yo-jong, the sister of North Korean leader Kim Jong-un, said that North Korea could declare a formal end to the Korean War, as proposed by South Korea. Pyongyang also said it was possible to discuss holding a joint summit on Seoul's rejection of double standards and hostility to North Korea.
In August, the United Nations International Atomic Energy Agency announced that North Korea was restarting a nuclear reactor at a research center in Yongbyon, which became the basis for the country's nuclear program.
In the first week of September, North Korea successfully tested a new type of long-range cruise missiles.
And in the middle of the month, the authorities of South Korea and Japan recorded the launch of two ballistic missiles from North Korea, just a few days after the tests of cruise missiles in this country, probably with nuclear potential.
The two Koreas are in an arms race, and both are developing increasingly powerful missiles and other weapons.
However, North Korea's nuclear tests are causing international condemnation and concern. The United States has said North Korea's actions violate UN Security Council resolutions and pose a threat to the country's neighbors.