The Sukhoi Company has delivered an unspecified number of Su-30M2 fighters to Russia at a time when the country is reportedly deploying forces on its borders with Ukraine.
The Russian Air Force will receive a few more fighters during this year under the framework of the 2014 State Defense Order.
Sukhoi said in a statement: "The Russian Air Force Commission checked the technical documentation on the combat aircraft at the airport of Sukhoi’s subsidiary, Komsomolsk-on-Amur aircraft plant (KnAAZ).
"The military pilots tested fighters on the ground and in the air. Afterwards the new aircraft flew to the place of their deployment."
The Su-30M2 has the capability to destroy manned and unmanned aircraft with medium-and short-range air-to-air guided missiles.
Sukhoi supplied the first batch of serial Su-34 frontline bombers to the Russian Air Force in June.
The supplies come in the midst of Ukraine’s conflict with pro-Russian rebels near its border with Russia.
The US, Europe and Japan have imposed sanctions on Russia, accusing the country of supporting the rebels.
Pentagon press secretary Navy rear admiral John Kirby said that Russia is maintaining at least 10,000 troops within 50km from the Ukrainian border.
"What matters is that they (Russia) continue to reinforce these units, that they are very capable and very ready across what we call combined arms capabilities, armour, artillery, air defence, special forces, and that they are closer to the border than they were in the spring.
"They are doing nothing but continuing to escalate the tension that exists inside eastern Ukraine."
Meanwhile, the US Department of Defense (DoD) has said that a survey and assessment team from the country’s European Command has arrived in the Ukrainian capital Kiev to assist in the investigation into the Malaysia Airlines Flight MH17 crash.
The passenger plane was shot down last month by missiles suspected to have been fired by the rebels.
Image: Sukhoi supplied a batch of Su-34 bombers to Russia in June. Photo: courtesy of Sukhoi Company.