Blood on Putin's hands: Ukraine Australian

Russian President Vladimir Putin has "Australian blood on his hands" over the Malaysia Airlines disaster, the leader of Australia's Ukrainian community says.

Almost 300 people, including 27 Australians, died following a suspected surface-to-air missile attack on MH17 which was downed in eastern Ukraine.

Pro-Russian separatists in the region and officials in Kiev have blamed the other side for the attack.

It's still not clear who was responsible but Prime Minister Tony Abbott has said it looks less like an accident than a crime.

"Putin now has Australian blood on his hands," Australian Federation of Ukrainian Organisations chairman Stefan Romaniw said.

"He has no respect for the international community, he does what he feels, he's a power monger."

"Trying to point the finger at Ukraine is disgusting."

A Putin spokesman reportedly said any allegation of Russian involvement in the fate of flight MH17 was "stupidity".

Mr Romaniw called on the Abbott government to withdraw its invitation to the Russian trade minister for Saturday's meeting of G20 trade ministers meeting in Sydney, and Mr Putin's invitation to the G20 leaders meeting in Brisbane later this year.

"Putin has no credibility," Mr Romaniw said.

Ukrainian charge d'affaires Mykola Dzhydzhora said it was Australia's decision whether to exclude Mr Putin from the G20 meeting.

"But if facts confirm Russian involvement in this situation, international reaction should be strong," he said.

Australia is demanding a full international investigation into the attack.