The Malaysian Airlines flight MH17 was hit multiple times by shrapnel before it crashed due to an immense loss of pressure, National security spokesman Andriy Lysenko said in Kyiv Monday.
Lysenko told press that MH17 suffered "massive explosive decompression" after being hit by a shrapnel missile.
Meanwhile, a group of Australian and Dutch police and forensic experts' operations in the crash site were halted by yet another clashes erupting in the area surrounding the site.
The area 30 kilometres from MH17's crash site was bombarded by missiles Monday.
"After about 30 minutes we spotted the convoy racing back, likely making the assessment that it was too dangerous to continue to the crash site," CBC correspondent Susan Ormiston reports on ground zero.
Russia is now calling for the United Nations to conduct its own investigation.
"We believe that such an inquiry must begin as quickly as possible under the UN aegis. To that end the Security Council must make yet one more decision. We are alarmed that some of our partners have been trying to steer practical efforts to organize the inquiry into separate bilateral contacts with the Ukrainian authorities," Russian Foreign Minister Sergei Lavrov told reporters on Monday.
The United States is pointing its finger to pro-Russian rebels as the ones responsible for downing MH17. But Russia had repeatedly denied these accusations and blamed the Ukrainian government as the one being guilty.
Lavrov underlined that Russia does not want to react with accusations too soon, but it hopes that "no one will be trying to cover tracks.
He said that images published by the US intelligence on Sunday were "pretext to punish Russia."
Lavrov had confused the images released by the Office of the Director of National Intelligence on Sunday showing Russian forces firing at Ukrainian military forces' aircraft to that of the crashed MH17.
However, US Secretary of State John Kerry had reportedly made a controversial call to Lavrov urging for Russia to "to stop the flow of heavy weapons and rocket and artillery fire from Russia into Ukraine, and to begin to contribute to deescalating the conflict," a statement from the State Department reads.
In the statement, Kerry said that he "did not accept Foreign Minister Lavrov's denial that heavy weapons from Russia were contributing to the conflict."
Lavrov upheld that Russia will not go "eye for an eye" against the US over its sanctions because it's not "worthy of a big country."