South Korea's military says projectiles fired by North Korea on Wednesday were two short-range ballistic missiles. It says they flew about 800 kilometers and reached an altitude of about 60 kilometers.
South Korea's Joint Chiefs of Staff says the missiles launched at 12:34 p.m. and 12:39 p.m. near the county of Yangdok in South Phyongan Province, which is about 80 kilometers northeast of Pyongyang.
The militaries of South Korea and the United States are analyzing details of the launches.
South Korea's Yonhap news agency quoted experts as saying the two missiles could be North Korean versions of Russia's Iskander.
North Korea announced on Monday that it had successfully test-fired newly developed long-range cruise missiles on the weekend. This indicates that Pyongyang has no intention of changing its policy of pushing ahead with missile development.
Meanwhile, South Korea tested a submarine-launched ballistic missile, or SLBM, on Wednesday.
President Moon Jae-in said the test was not in response to the North's provocations. But he added that bolstering his country's missile strategy can deter such provocations.