Islamic Republic of Iran's Foreign Minister Ali Akbar Salehi left the Nigerian capital of Abuja for Tehran in the early hours of Friday, IRNA reported.
Salehi arrived in Abuja on Thursday after completing his two-day tour of Europe.
The Iranian foreign minister arrived in Ljubljana, Slovenian capital, on Monday on the first leg of a two-nation European tour which later took him to Vienna, Austria.
During his stay in Ljubljana, Salehi met with his Slovenian counterpart Samuel Zbogar and inaugurated the first Iranian Embassy in the republic.
While in Vienna, Salehi discussed issues of mutual interest in separate meetings with Austrian officials including his Austrian counterpart and Deputy Chancellor Michael Spindelegger. Salehi visited Austria at the Spindelegger's invitation.
Foreign Minister Salehi had a short stop in Algeria en route NIgeria and met with his Algerian counterpart, Mourad Medelci.
Total trade of D8 member countries with the outside world stood at dlrs 750 billion in 2007.
The overall population of the eight countries is about 60 percent of the Muslim people, or close to 13 percent of the world's population.