"The forces of the People's Republic of Donetsk could not have fired at the plane from a BUK system because we have no such sort of weapons," general Eduard Basurin of the self-proclaimed republic told AFP.
A criminal inquiry in the Netherlands found today that the missile that shot the Malaysia Airlines Boeing 777 out of the sky was snuck out of and back into Russia.
The investigators also confirmed that the missile that slammed into the plane was fired from a field in a part of eastern Ukraine under the control of the separatists at the time.
The passenger jet was shot down in July 2014 on its way from Amsterdam to Kuala Lumpur.
The incident came at the most heated point in the war, straining tensions between the West and Moscow even further.