The announcement -- which confirmed a Twitter posting by the rebels -- came as representatives of Ukraine, Russia, the rebels and the Organization for Security and Cooperation in Europe met in Belarus
On Saturday, rebel leader Aleksandr Zakharchenko called for a cease-fire, in a move that could be aimed at increasing international pressure on Ukraine to allow in a Russian aid mission.
The U.N.'s top human rights official is calling for a thorough investigation into the violation of international law that occurred when the flight was shot down.
The train engineer says the cars' refrigeration system had been off overnight, and reporters say the smell of decomposing bodies is now more pronounced.
A Ukranian official says 181 bodies have been located so far at the crash site. He the bodies will be taken for identification to Kharkiv, a government-controlled city 170 miles north of the crash site.
Ukrainian forces now control 23 of 36 local regions within Donetsk and Luhansk provinces, two regions along the Russian border that have declared independence from the government in Kiev.