Viral Swing: Japan detects radio signals pointing to possible North Korea missile test: source

TOKYO/WASHINGTON (Reuters) - Japan has detected radio signals suggesting North Korea may be preparing another ballistic missile launch, although such signals are not unusual and satellite images did not show fresh activity, a Japanese government source said on Tuesday. After firing missiles at a pace of about two or three a month since April, North Korean missile launches paused in September, after it fired a rocket that passed over Japan’s northern Hokkaido island. "This is not enough to determine (if a launch is likely soon)," the source told Reuters. Japan's Kyodo news agency reported late on Monday that the Japanese government was on alert after catching such radio signals, suggesting a launch could come in a few days. The report also said the signals might be related to winter military training by the North Korean military.