World leaders of the group of eight developing countries have been meeting in Pakistan to discuss trade and forging closer economic ties.
The summit in Islamabad is being attended by Iran, Egypt, Turkey, Indonesia, Malaysia, Nigeria and Bangladesh.
As the members have large Muslim populations, security and the role of extreme militant groups is also being discussed, a subject close to the talks.
The gathering began just hours after the Taliban admitted killing several Shi’ites in a series of bombings.
A suicide attack in Rawalpindi on Wednesday night left 13 people dead.
Hardline Sunni militant groups have recently stepped up attacks against Pakistan’s minority Shi’ites whom they regard as non-Muslims.
Two other bomb blasts killed at least three people during another Shi’ite gathering in Karachi.