(LEAD) N. Korea fires multiple ballistic missiles toward East Sea: JCS

What happened: North Korea fired multiple ballistic missiles toward the East Sea on Monday, the South Korean military said, less than two weeks after a suspected hypersonic ballistic missile launch. Key numbers: Launch detected about 9:20 a.m. from the Pyongyang area. At least one missile flew more than 900 kilometers. Prior launch was Oct. Why it matters: The JCS said the South Korean military stepped up surveillance and maintains an all-out readiness posture, sharing information with the United States and Japan. The launch followed South Korea's first test of a hypersonic glide vehicle. Coverage: 5 outlets in 24h

North Korea fired multiple ballistic missiles toward the East Sea on Monday, the South Korean military said, less than two weeks after a suspected hypersonic ballistic missile launch.

The JCS said the South Korean military stepped up surveillance and maintains an all-out readiness posture, sharing information with the United States and Japan. The launch followed South Korea's first test of a hypersonic glide vehicle.