The plane crashed just six minutes into its flight. No civilians were reported dead or injured. A South Korean navy plane crashed in the southeastern city of Pohang on Thursday, killing all four crew members on board, according to local media. The navy said the cause of the crash was under investigation.

South Koreans turned out in record numbers to cast their ballots as early voting kicked off on Thursday, with long lines at many of the country's polling stations ahead of the June 3 snap presidential election.