Malaysian Airlines Flight 17 was downed by a Buk rocket fired from the eastern part of Ukraine last year, a Dutch-led probe concluded.

Ukraine should have shut the airspace over the area due to the outbreak of violence there, Dutch Safety Board Chairman Tjibbe Joustra said Tuesday.

The group led an international probe into the crash, which occurred as the Boeing Co. 777 was travelling from Amsterdam to Kuala Lumpur on July 17, 2014, as the majority of the 298 victims were Dutch.