(File photo)

SEOUL, Aug. 26 (Xinhua) -- The Democratic People's Republic of Korea (DPRK) test-fired three short-range projectiles into its eastern waters, Seoul's military said Saturday.

The DPRK launched several unidentified short-range projectiles into the sea off the country's northeast region from an area near Gitdaeryong in Gangwon province at about 6:49 a.m. local time (2149 GMT Friday), according to South Korea's Joint Chiefs of Staff (JCS). The Gangwon province borders South Korea's northeastern region.

The JCS said the projectiles flew about 250 km, but what the projectiles are was not immediately known. It said the military authorities of South Korea and the United States were jointly analyzing the test-firings.

According to Yonhap news agency report citing an unknown source, a total of three projectiles were test-launched.

The first and third projectiles traveled 200 km, and the second one exploded in the air immediately after taking off.

The test-firings were immediately reported to South Korean President Moon Jae-in who ordered the convening of the National Security Council (NSC) meeting of the presidential Blue House.

Chung Eui-yong, top national security advisor to President Moon, chaired the meeting for about an hour earlier in the day.