Malaysia's Minister of Foreign Affairs, Anifah Aman, left for Ukraine early on Monday, to discuss the issues surrounding the downed Malaysia Airlines Flight 17 with senior Ukrainian officials.
Aman, who was leading a government delegation left at 00:30 a.m. local time (1630 GMT on Sunday).
He is scheduled to meet with Ukrainian President Petro Poroshenko to discuss access to the crash site and the recovery of the bodies of the victims.
International monitors say armed rebels have limited their access to the crash site and Ukrainian officials said armed rebels took 192 bodies away from their workers by force Sunday.
Aman will head to Istanbul and transit to Kiev.
He refused to answer questions from the media but said he would update reporters after his discussions.
Flight MH17 was shot down in eastern Ukraine on Thursday, leaving 298 dead.
The Boeing 777 was flying from Amsterdam to the Malaysian capital of Kuala Lumpur when it was shot down, killing all 298 passengers and crew.