The PM held bilateral meetings with three ASEAN leaders, including his Vietnamese counterpart Nguyen Xuan Phuc and Myanmar's State Counsellor Aung San Suu Kyi, and discussed key bilateral and regional issues.
The sources also said another round of military talks between the two sides on Wednesday to defuse tensions in the area remained inconclusive. The talks lasted nearly seven hours.
Around 350 stranded Indians were evacuated on Wednesday from strife-torn Yemen's Aden city on an Indian Naval ship that will now take them to Djibouti, a country neighbouring Yemen and across the Red Sea.