According to the agency, Pashinyan arrived in Dushanbe to participate in the summit of the Collective Security Treaty Organization (CSTO), which is being held in the capital of Tajikistan.
"During the conversation, the parties discussed issues of strengthening and expanding bilateral cooperation in important political, trade, economic, industrial and cultural spheres," the press service of the head of Tajikistan said.
Earlier it was reported that Russian President Vladimir Putin was taking part in the CSTO summit via videoconference.