Dar es Salaam: President of the Presidential Council, Mohamed Al-Menfi, met yesterday at his residence in Dar es Salaam with preachers of the World Islamic Call Society in Tanzania who are graduates of the Islamic Call College in Tripoli.According to Libyan News Agency, Al-Menfi had arrived earlier yesterday in the Tanzanian capital to participate in the African Heads of State Summit on Energy. This summit is scheduled to be held today, under the slogan "Lighting Africa: The Transformative Power of Mission 300," and is an initiative of the African Development Bank Group and the World Bank Group, in cooperation with the African Union.