From the Dutch Safety Board:
The crash of flight MH17 on 17 July 2014 was caused by the detonation of a 9N314M-type warhead launched from the eastern part of Ukraine using a Buk missile system. So says the investigation report published by the Dutch Safety Board today. Moreover, it is clear that Ukraine already had sufficient reason to close the airspace over the eastern part of Ukraine as a precaution before 17 July 2014. None of the parties involved recognised the risk posed to overflying civil aircraft by the armed conflict in the eastern part of Ukraine.
In response to the crash of flight MH17 the Dutch Safety Board has conducted various investigations, which have been published in two reports. The first report is on the causes of the crash and the issue of flying over conflict areas. The second report is on the compilation of the passenger list and the process of informing the relatives of the Dutch victims. The rationale behind the investigations has been published separately.
All of the following materials are in English.
Direct to Summary/News Release
Direct to Complete Report (279 pages; PDF)
Direct to Summary (20 pages; PDF)