The event brings together foreign ministers and senior delegations from member countries to discuss regional economic cooperation and connectivity, according to the Foreign Office in Islamabad.
The meeting will focus on developing a joint strategy to strengthen regional trade, energy cooperation, transportation networks and connectivity between Central Asia and international markets.
Foreign ministers and high-level delegations from several ECO member states are arriving in Pakistan to participate in the important regional gathering.
Iranian Foreign Minister Abbas Araghchi is also expected to attend the meeting, while Turkish Republic of Northern Cyprus Foreign Minister Tahsin Ertugruloglu has already arrived in Islamabad.
According to sources, foreign ministers from Tajikistan and Iran, among other participating countries, will attend the meeting. Kyrgyzstan and Kazakhstan will be represented by their deputy foreign ministers, while Türkiye will also send its deputy foreign minister.
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Afghanistan's foreign minister has not been invited to participate in the meeting.
Deputy Prime Minister and Foreign Minister Ishaq Dar will address the opening session, while ECO Secretary-General Asad Majeed Khan and foreign ministers from member states will also deliver speeches.
Discussions will cover ways to expand economic and trade relations among member countries, improve regional connectivity, strengthen energy cooperation and develop transportation infrastructure.
Meetings between visiting foreign ministers and Prime Minister Shehbaz Sharif are also expected during the two-day gathering. A luncheon will additionally be hosted in honour of the visiting delegations.
The Economic Cooperation Organization comprises 10 member states and three observers. Pakistan's hosting of the meeting is being viewed as an opportunity to explore new avenues for regional economic cooperation, trade expansion and stronger diplomatic engagement.