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North Korea has test-fired four short-range missiles into the sea.
The move from the highly secretive country is an apparent show of force to coincide with South Korea-US joint military exercises, Seoul's defence ministry said.
According to news.com.au, a ministry spokesman said the missiles were fired off the east coast of North Korea.
North Korea carries out short-range missile tests on a fairly routine basis.
The South Korea-US drills kicked off on Monday, despite vocal opposition from Pyongyang, which views them as rehearsals for invasion, the report added.
