A patrol boat KRI Sigurot 864 spotted the boat MV Sunrise Glory, which was flying a Singapore flag, as it entered Indonesian waters in the Singapore Strait.
South Korean President Moon Jae-in held a meeting with top North Korean officials, including the country's ceremonial head and leader Kim Jong-un's sister.
UN Secretary-General Antonio Guterres had a brief exchange with Kim Yong Nam, the President of the Presidium of the Supreme People's Assembly of North Korea.
US Vice-President Mike Pence on Friday skipped a dinner hosted by South Korean President Moon Jae-in ahead of the opening of the PyeongChang Winter Olympics.
India is weighing the move as it had burnt its hands in Sri Lanka when it intervened and sent its troops to Sri Lanka in the mid-1980s only to be humiliated by both the parties -- Sri Lankan Tamil Tigers and the government.
The Afghan delegation was led by Deputy Foreign Minister Hekmat Khalil Karzai while the Pakistani delegation was led by Foreign Secretary Tehmina Janjua.