Chief Adviser Dr Muhammad Yunus left Dhaka for Bangkok on Thursday to join the sixth Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (Bimstec) Summit.
"A flight of Biman Bangladesh Airlines carrying the chief adviser and his entourages departed from Hazrat Shahjalal International Airport at 8:55am," Chief Adviser's Deputy Press Secretary Azad Majumder told BSS.
Yunus will speak at the summit and also hold bilateral talks with the leaders of member states.
He will hold a bilateral meeting with Indian Prime Minister Narendra Modi on the sidelines of the summit on Friday.
The chief adviser will also be present at two MoUs signing ceremonies.
On Friday, the Bimstec chairmanship will officially be handed over to the Bangladesh chief adviser.
The summit is being held in Bangkok, Thailand, from Wednesday to Friday, focusing on seven key pillars of regional cooperation: trade, investment and development; environment and climate change; security; agriculture and food Security; people-to-people contact; science, technology, and innovation; and connectivity.