South Korea's Joint Chiefs of Staff announced the detected launch and detailed that the incident involved two short-range ballistic missiles. Officials did indicate that the missiles were launched from the Jangyon area.
Authorities have further noted that the launch occurred between 7:41 a.m. an 7:51 a.m. local time, and that both missiles flew some 620 kilometers. No details were released of the reached altitude or of where the projectiles landed.
"We strongly condemn the North's series of ballistic missile launches as an act of significant provocation that harms peace and stability not only on the Korean Peninsula, but also in the international community, and a clear violation of UN Security Council resolutions," the JCS said in a statement urging Pyongyang to cease such action.
The prime minister's office has stated that no damage has been detected. Officials are still collecting data on the launch.
The missile launch took place a day after South Korea and the United States launched their 11-day joint military exercises on Monday; in fact, the Tuesday missile launch came as North Korea announced it had test-fired two "strategic cruise missiles" from a submarine before the start of said joint drills.
Earlier March, in the lead-up to the joint exercises, North Korea carried out a ballistic missile test unlike its usual tests. While launches are typical done with the Sea of Japan in mind, the early March test saw leadership dispatch the projectile into the Yellow Sea, waters bordering regional ally China.