Russian secret services may have executed the troops suspected of shooting down Malaysian Airlines flight MH17 , say sources involved in the investigation of the crash over eastern Ukraine . The Dutch-led probe is leaning towards a conclusion that a BUK missile fired from rebel-held territory downed the Boeing 777 , killing all 298 on board . And it is highly likely the aircraft was shot out of the sky by Russian military personnel , according to a report by the Netherlands ' state broadcaster NOS , citing anonymous sources in the police and the group of investigators working on the probe into the plane 's loss . Scroll down for videos . Cover-up : An official probe looking into the downing of MH17 ( pictured ) is leading to the conclusion that the plane could have been shot down by Russian military personnel from rebel-held Ukraine . Destructive : The Dutch-led probe suggests a BUK missile ( pictured in 2010 ) fired from rebel-held territory downed the Boeing 777 . Weapon : A driver in Ukraine filmed this BUK launcher on the back of a military track rumbling back across the Russian border two days after MH17 went down . 'My sources believe that these people might have changed their identities or even been executed by Russian secret service in order to hide everything , ' said Dutch journalist Robert Bas . Those who allegedly shot the missiles at the Boeing have been 'untraceable ' for investigators , it is claimed . 'So in the end there may be no trial , unfortunately , just the report on the results of the investigation , ' he added . Sources close to the investigation also complain they are under siege from persistent attempts by Russian secret services to hack their computer system and plant spyware software on their smartphones , reported NOS . Phones and laptops used by investigators in Ukraine had to be 'destroyed ' subsequently because they were infected with spyware , it was claimed . Even home communications devices of police officers on the investigation were removed because they were 'contaminated ' , it was alleged . The long-awaited probe into the crash of flight MH17 is not due to unveil its findings until October , but NOS says its claims are based on 'several anonymous sources in the police and the group of investigators ' . Russia has strongly and repeatedly denied any role in shooting down MH17 , and also dismissed claims that the aircraft was hit by pro-Moscow rebels . Denial : Russian president Vladimir Putin ( pictured ) blamed Ukraine for obstructing investigators from the crash site - and Moscow has repeatedly denied any involvement in the plane 's destruction . Damage : Russian media has said th holes in the plane 's fuselage are not consistent with the damage caused by a BUK missile , which investigators believe could be the reason for its demise . Yet the evidence 'points in one direction ' , namely a ground-based attack by a BUK missile , it was claimed in Holland . Despite this , the official probe - which has examined more than one million documents , videos and photographs - has not so far ruled out other versions on the downing of the plane . 'It is a leading version now but not the only one , they are still investigating the other options , ' said the journalist . Investigators were hampered at the crash site by fighting in the region between pro-Moscow rebels and the Ukrainian army . The Russian media has highlighted claims that MH17 was hit by a Ukrainian warplane in the vicinity at the time of the crash on 17 July 2014 . Doomed : According to Ukrainian intelligence chief Vitaliy Naidahis , this was a picture of a missile being fired from Snizhne in Ukraine towards the MH17 flight . Aftermath : Sources investigating the root of MH17 's destruction ( pictured ) complain the Russian Secret Service is 'persistently ' trying to hack their computers . A suspected 'executioner ' - a Ukrainian air force pilot - was even named . Western secret services have also been blamed . Yesterday , Russian newspaper Komsomolskaya Pravda cited an expert saying that the holes in the fuselage of the crashed plane did not match the damage normally caused by a BUK missile . 'At least 9 holes were found which are typical for the damage from an 'air-to-air ' missile , suggesting that MH17 was shot from a plane . While Western governments have pointed towards a BUK system being responsible for downing the Boeing 777 on 17 July 2014 , such a conclusion by an international air crash investigation would be a devastating blow for Moscow .
It is highly likely the aircraft was destroyed by 'BUK ' surface-to-air missile . Russian military could have shot it down from a rebel-held area in Donetsk . Investigators say shooters are 'untraceable ' and may have been executed . More than one million documents , videos and photo 's have been looked at . Investigators worried Russian secret service are trying to hack computers . Boeing 777 crashed near Ukraine in Donetsk on July 7 , 2014 and killed 298 .