In this 2015 file photo, a South Korean navy patrol boat opens fire during an exercise off South Korea's southeastern coast near Busan. South Korea's navy on Friday fired warning shots to chase away two North Korean ships after they briefly crossed a disputed sea boundary. Photo: AP
In this 2015 file photo, a South Korean navy patrol boat opens fire during an exercise off South Korea's southeastern coast near Busan. South Korea's navy on Friday fired warning shots to chase away two North Korean ships after they briefly crossed a disputed sea boundary. Photo: AP
North Korea

South Korean patrol boat fires five warning shots to drive off North Korean intruders

In this 2015 file photo, a South Korean navy patrol boat opens fire during an exercise off South Korea's southeastern coast near Busan. South Korea's navy on Friday fired warning shots to chase away two North Korean ships after they briefly crossed a disputed sea boundary. Photo: AP
In this 2015 file photo, a South Korean navy patrol boat opens fire during an exercise off South Korea's southeastern coast near Busan. South Korea's navy on Friday fired warning shots to chase away two North Korean ships after they briefly crossed a disputed sea boundary. Photo: AP
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