Rebels in eastern Ukraine have handed over two flight-data recorders from the downed MH17 plane to Malaysian experts.
A senior rebel leader signed them over to the Malaysian officials at a meeting in the city of Donetsk.
The Malaysian Airlines passenger jet crashed last Thursday, killing all 298 people on board.
Western nations say there is growing evidence that flight MH17 was hit by a Russian-supplied missile fired by rebels, but Russia has suggested Ukrainian government forces are to blame.
European Union foreign ministers are expected to discuss further measures against Russia later on Tuesday.
Both the EU and the US have imposed sanctions on Moscow following its annexation of Crimea and the outbreak of hostilities in eastern Ukraine.
Experts say the “black boxes” will reveal the exact time of the incident and the altitude and exact position of the aircraft.
They should also contain the cockpit voice recorder, which it is hoped will provide clues as to what the cause of the crash was.
The head of the Malaysian delegation told reporters that the recorders were “in good condition.”