Australia will keep pushing on MH17: PM

Prime Minister Tony Abbott says Australia will continue to do everything it can to bring the MH17 attackers to justice after the UN backed an Australian resolution demanding full access for investigators.

The United Nations Security Council unanimously adopted the Australian-authored resolution demanding unrestricted access for international authorities to the crash site in rebel-held eastern Ukraine.

It also calls on the Russian-backed rebels to ensure the bodies of the 298 victims - including up to 39 Australians - are treated with the utmost dignity and respect and returned to their grieving families as soon as possible.

And it calls on all countries to co-operate in bringing the perpetrators of the crime to justice.

"Today's resolution lends the full weight of the Security Council in condemning the attack and extending the international community's deepest sympathies and condolences to the families of all the victims of this tragic incident," Mr Abbott said in a statement.

"Australia will continue to do everything in its power to ensure this barbaric act is thoroughly investigated and the perpetrators brought to justice."