The projectiles were fired eastward from Sino-ri in North Pyongan province, agencies reported. They were launched from the area where one of North's missile bases is located.
The Joint Chiefs of Staff (JCS) said that the projectiles were fired at around 4.30 p.m, Yonhap news agency reported.
The details about where the projectiles landed is still not known , but it is being said they could have flown all the way across North Korean territory before crashing into the East Sea.
Sino-ri, about 77 km northwest of Pyongyang, is where the North has a base of medium-range Nodong missiles.
The latest firing came as officials from the US and Japan were visiting South Korea, including America's Special Representative for North Korea Stephen Biegun, to explore ways to resume stalled nuclear talks with the communist country.
On Saturday as well, North Korea tested a new short-range missile, Associated Press reported. Kim personally supervised the test of what experts believe was a short-range ballistic missile first displayed by the North at a military parade early last year, along with a drill involving 240 millimeter- and 300 millimeter-caliber multiple rocket launchers, it said.
The test early Saturday was quickly played down by Trump and his top advisers, who noted it was not the kind of long-range missile leader Kim Jong Un has refrained from launching since 2017.