Moscow: The Russian Defence Ministry said on Friday that a Ukrainian radar station of surface-to-air missiles was operating on the day a Malaysian airline crashed in the country`s rebel-held east killing all 298 on board. "On July 17 Russian radio-technical facilities recorded the operation of the Kupol radar station of the Buk-M1 system located near the settlement of Styla (30 kilometres, 18 miles, south of Donetsk)," the Defence Ministry said in a statement carried by Russian news agencies. The ministry added that a Buk missile could have been launched from systems stationed in the villages of Avdeyevka or Gruzsko-Zoryanskoye, both around the eastern Ukrainian city of Donetsk.