N Korea fires 4 missiles

North Korea test-fired four short-range missiles into the sea Thursday, Seoul's defence ministry said, in an apparent show of force to coincide with South Korea-US joint military exercises. A ministry spokesman told the news agency the missiles, with an estimated range of 200 kilometres (125 miles), were fired off the east coast of North Korea. "Our military will maintain tight vigilance in preparation for additional launches or any military provocation from the North," the spokesman said, according to AFP.