N. Korea briefly activates radar system

SEOUL, Nov. 15 (UPI) -- North Korea's brief activation Sunday of its fire-control radar system forced South Korea to quickly move its patrol boats, military sources said.

The radar system covers the disputed western sea border, and South Korea needed to get the boats away from the North's shore-based artillery and missiles, Yonhap reported from Seoul.

After one hour, the situation returned to normal, but the South Korean military stayed on high alert, the news agency reported.