North Korea has fired three unidentified projectiles into the sea from the eastern coastal town of Sondok on Monday, Seoul's military said.
It's the second weapons test by Pyongyang in a week and was reportedly overseen by North Korean leader Kim Jong-Un.
According to South Korea's Joint Chiefs of Staff, the projectiles included artillery fired from a multiple launch rocket system (MLRS) and flew up to 200 km and reached 50 km in altitude.
Japanese Defence Minister Taro Kono confirmed that the projectiles did not fall into the country's exclusive economic zone.
North Korea, after a three-month halt in missile testing, had tested an MLRS on March 2.