North Korea has continued its torrent of missile launches, firing off two missiles in quick succession Monday morning, Seoul said, days after large-scale military exercises between South Korea, Japan and the United States.

South Korea’s Joint Chiefs of Staff said in a statement that the weapons had been fired to the northeast at around 5:05 a.m. and 05:15 a.m. from near Jangyon, in North Korea’s South Hwanghae province.

The short-range ballistic missile traveled about 600 kilometers, while the other unidentified ballistic missile flew about 120 km.