Video footage uploaded on Saturday (July 9) by Islamic State's affiliated news agency Amaq showed a helicopter being shot and crashing to the ground near Palmyra in Syria. <br /> <br />As the helicopter spiraled to the ground cries of 'It's fallen, God is greatest' could be heard on the video. <br /> <br />Interfax news agency quoting Russia's defence ministry said, militants shot down a military helicopter near Palmyra in Syria, killing two Russian pilots on board, . <br /> <br />The two men had been attacking a detachment of Islamic State fighters in the Homs region on Friday (July 8), when the Syrian Mi-25 helicopter they were in ran out of ammunition, the ministry said, according to Interfax. <br /> <br />"The turning helicopter was hit by militants' gunfire from the ground and crashed in the area controlled by the Syrian government army. The crew died," it added. <br /> <br />Russian forces entered the conflict at the end of last year, backing the forces of Syrian President Bashar al-Assad.