MOSCOW, May 25 (Xinhua) -- The Russian Defense Ministry said Friday that no new anti-aircraft missiles crossed the border to Ukraine since 1991, refuting the accusation that Russia was responsible for the crash of MH17 on July 17, 2014, according to Russian media reports.

The Dutch-led five-nation joint investigation team (JIT) announced on Thursday that the installation of the Buk missile that shot downed the flight MH17 in 2014 came from the 53rd anti-aircraft missile brigade of the Russian army in Kursk.