The former deputy foreign minister made the announcement in a message released on Monday.
According to IRNA, he congratulated the Syrian leadership, people and Army for the latest victories made by the country's armed forces.
Amir-Abdollahian noted that Aleppo is on the eve of complete liberation from the Takfiri terrorist groups' dominance.
Iran would continue its advisory help for the Iraqi and Syrian nations and governments, the official said.
He noted that terrorists have no place in the region's future.
According to the Syrian Arab News Agency (SANA), Army and Armed Forces units continued making advances in the battle against terrorism on Monday, establishing control over the neighborhoods of al-Haidaria and al-Sakhour and the Scientific Research Housings area in the eastern part of Aleppo city.
EghtesadOnline: The Syrian Army is about to completely liberate Aleppo, Majlis (Parliament) Speaker's Special Advisor for International Affairs Hossein Amir-Abdollahian said on Monday.