SEOUL, Jan. 27 (UPI) -- North Korea launched multiple short-range ballistic missiles toward the sea between the Korean Peninsula and Japan on Tuesday afternoon, Seoul's military said, marking a fresh provocation ahead of a major ruling party congress.

"Our military detected several short-range ballistic missiles launched from an area north of Pyongyang into the East Sea around 3:50 p.m. today," South Korea's Joint Chiefs of Staff said in a text message to reporters.

The missiles flew approximately 217 miles, the JCS said, adding that South Korean and U.S. intelligence authorities are conducting a detailed analysis of their exact specifications.

"Under a robust South Korea-U.S. combined defense posture, the military is closely monitoring North Korea's various movements and maintaining the capability and readiness to overwhelmingly respond to any provocation," the JCS said.

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