He made the remarks in a meeting with Secretary of Armenia's Security Council Armen Grigoryan in the Iranian capital Tehran.
During the meeting, Amir-Abdollahian stressed that Iran's policy was to preserve the international borders and countries' territorial integrity, highlighting the necessity of resolving the Caucasus region's problems by regional countries.
He referred to the 3+3 format, which brings together the three Caucasian states of Armenia, Azerbaijan, and Georgia, as well as its three neighbors, Iran, Russia, and Türkiye, as an efficient mechanism for resolving regional issues.
An exclusive report by Al Jazeera’s @osamabinjavaid shows how the main city in Nagorno-Karabakh has been all but abandoned after most of the region’s 120,000 ethnic Armenians fled in the wake of a takeover by Azerbaijan ⤵️ pic.twitter.com/NtkCpXAhQw
The Armenian official thanked Iran for its principled position in support of Armenia's territorial integrity and welcomed negotiations within the 3+3 format.
Meanwhile, Iran's embassy in Armenia announced Tuesday that the country's first batch of humanitarian aid sent by the Iranian Red Crescent Society has arrived in the southern Armenian province of Syunik.
The consignment contains more than 50 tons of aid materials, including tents, blankets, food and heaters.
Last month, Azerbaijan took Nagorno-Karabakh from ethnic Armenians. Azerbaijan's capture of Nagorno-Karabakh led to an exodus of many ethnic Armenians from the region during the following days. Armenia and Azerbaijan have been at loggerheads over the mountainous region since 1988.
#BRICSSummit | South African President Cyril Ramaphosa announced that the BRICS group has agreed to admit Argentina, Saudi Arabia, Egypt, Ethiopia, the United Arab Emirates, and Iran as full members of the bloc. pic.twitter.com/rcnh1rZX1S