Final decision to open the membership as recommended by the Shanghai Corporation Organisation (SCO) Foreign Ministers meet would be taken at the Summit meeting to be held in Tajikistan's capital Dushanbe between September 12-13.
Hinting that a decision on new member states would be taken at the meeting, Chinese Foreign Ministry spokesman, Qin Gang told a media briefing: "We believe that the members states of SCO will have serious discussion on the relevant issues during the summit in Tajikistan and make positive progress on issues concerning absorbing new member states and establishing rules for the organisation."
The move to open the membership could enable India and Pakistan, which are currently observers to become regular members.
Significantly, Chinese President Xi Jinping is set to travel to South Asia after the SCO Summit and could convey the decision to Indian leadership during his visit to New Delhi in the third week of this month.
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SCO was founded in 2001 in Shanghai by the leaders of China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan and Uzbekistan.
India, Pakistan, Iran, Afghanistan and Mongolia have observer status.
Observers say that China and other SCO states which focussed on enhancing anti-terrorism cooperation in view US plans to leave Afghanistan wants to rope in India and Pakistan to beef-up and enlarge the alliance.
The SCO states in recent years intensified anti-terrorism drills and they have just concluded an elaborate exercise in China's Inner Mongolia region.
For its part, India has shown interest to join the grouping as it would provide more active role for it in Central Asia.