Prosecutors investigating the downing of Malaysia Airlines flight MH17 over eastern Ukraine in 2014 are due to release their findings today.
The Dutch-led team is gathering evidence for a possible criminal trial.
An earlier inquiry by the Dutch Safety Board concluded a Russian-made missile hit the aircraft, without saying who fired it.
The Boeing 777 broke apart in mid-air flying from Amsterdam to Kuala Lumpur. All 298 people on board were killed.
Prosecutors from Australia, Belgium, Malaysia and Ukraine are also part of the joint investigation team, the BBC reported.
Ukrainian government forces were involved in heavy fighting with pro-Russian separatists when the incident occurred in July 2014.