This was stated by Marie Harf, Deputy Spokesperson of the State Depaertment in Washington, Censor.NET reports citing the official site of the Department.
"At the time that MH17 flight dropped out of contact, we detected a surface-to-air missile launch from a separatist-controlled area in southeastern Ukraine," she said answering the question about the Russia's statement.
She also stated that "we've made an assessment based on a broad range of information. We know this was fired from Russian-controlled territory. It is our assessment, very strong assessment this was an SA-11 that we know the Russian-backed separatists have. We, again, continue to gather more information and call on Russia to push the separatists to allow for a full investigation."
"I would also say that the Russian Government has a long history during this conflict of misinformation and propaganda that they've put out, so I would take anything they say about this with a very large grain of salt," she noted.
Earlier, Chief of the Main Operations Directorate of the General Staff of the Russian Armed Forces, Lieutenant-General Andrey Kartapolov said that Russian means of objective control allegedly recorded a Ukrainian Su-25, which probably flew in the direction of the Malaysian Boeing. Kartapolov said at the briefing that the alleged Su-25 of the Ukrainian Air Force was at a distance of three to five kilometers from the Boeing, which crashed later. According to him, Su-25 is capable of guaranteed hit at aerial targets at a distance of five kilometers. The combat ceiling of this gunship is seven kilometers.