Russian TV channel Nastoyashcheye Vremya released an archive video, where Volodymyr Tsemakh, the former AA defense chief of the so-called "Donetsk People's Republic" recognized that he hid the Buk missile launcher. This particuar kind of weapon was used during the Russian occupants' attack on MH17 civilian aircraft in the occupied area of eastern Ukraine in July 2014.
In the video, Tsemakh told the reporter his own story of what happened that day; he said that the local armed mercenaries aimed the Ukrainian military planes, one of which shot Boeing 777 of Malaysian Airlines. He said they allegedly managed to shoot down one of the Ukrainian planes.
Then, he said that he got some boy [outside the destroyed Boeing], and that he was hiding something (02:24). The video may be found here.
"One of the words in this quote was made inaudible by this video's creators, but if one reads the lipsync carefully, it could be the word Buk, the SAM system", the TV channel explained when telling the story about Tsemakh's detention.
The Russian mercenary was detained in Snizhne, Donetsk region last week. Ukraine's SBU, the State Security Service claimed he could prove a valuable witness in the MH17 case.