After briefing relatives of the 298 people killed in the July 2014 crash, Fred Westerbeke, the prosecutor leading the international probe, said the investigators had obtained all the information they needed from the United States, RFE/RL reports.

Saying he did not know when the criminal investigation would be completed. Westerbecke pledged to finish the probe "as quickly as possible, if only because of the frustration among the families."

Read alsoDutch MFA says intl MH17 tribunal possibleA Dutch civil investigation previously concluded that the plane was downed by a Soviet-designed Buk surface-to-air missile.

Read alsoBellingcat founder: Lawyer files suit against Russia, Putin about MH17 crash, conflict in UkraineEarlier, Bellingcat, the group specializing in open source intelligence and analysis said it had evidence that Russian soldiers and officers were involved in firing the missile or had knowledge of who did it.