It was the North's seventh test-fire of projectiles in the space of a month.
On Saturday, North Korea fired two projectiles into the East Sea at 6:45AM and 7:02AM, Korea time, from its eastern area of Sondok.
Seoul's Joint Chiefs of Staff says the projectiles were thought to be "short-range ballistic missiles."
The projectiles flew roughly 380 kilometers, reached an altitude of 97 kilometers and hit a maximum speed of over Mach 6.5, which is about 8,000 kilometers an hour.
The North began its streak of tests on July 25th and has launched multiple types -- believed to be short-range ballistic missiles resembling Russia's Iskander, a large-caliber guided multiple rocket launcher, and surface-to-surface tactical missiles similar to U.S. ATACMS.
At 8:30AM, South Korea convened its National Security Council.
The council expressed "strong concerns" on how the North is continuing its projectile launches even after Seoul and Washington wrapped up their joint military exercise earlier this week.
It urged the North to stop acts that raise military tensions on the peninsula.
The projectiles launched are being analyzed.
The South Korean military says it is sharing related information with Japan under their bilateral intel-sharing pact GSOMIA as Tokyo asked for the data.
As Seoul recently decided to pull out of GSOMIA, the deal is effective for 90 more days until November 22nd.
Oh Jung-hee, Arirang News.