The father of three children killed in 2014 when Malaysia Airlines Flight 17 was shot down tore into President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE on Tuesday for his failure to hold Russian President Vladimir Putin accountable for the country's involvement in the attack.

"You invented and speak a lot about "fake news.' But lets try talking about something thats not fake … lets call them irrefutable facts," Anthony Maslin said in a Facebook post on Tuesday.

Maslin's three children were killed when the Malaysian Arlines plane was shot down over Ukraine in an incident that has been blamed on Putin.

The post was published four years after his three children, Mo, Evie and Otis, and their grandfather Nick Norris were killed, according to the Australian Broadcasting Company.

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"That passenger flight MH17 was shot out of the sky and 298 innocent people were murdered is an irrefutable fact. That the plane was hit by a Russian missile has been proven to be an irrefutable fact.

"That the man whose arse you’ve just been kissing did this, and continues to lie about it, is an irrefutable fact."

Maslin added that the event "destroyed" his life and the lives of many others.

In total, 283 passengers and 15 crew members were killed on July 17, 2014, after a Buk missile was fired at the plane. A Dutch-led Joint Investigation Team said that separatist fighters supported by Russia were responsible for the attack, according to The Telegraph.

The statement came a day after Trump's summit in Helsinki with Putin.

Trump came under bipartisan criticism in the United States for his performance at a post-summit press conference with Putin in which he appeared to side with the Russian leader over his own intelligence agencies on the subject of Russia's meddling in the 2016 election.

Trump attempted to walk back his comments on Tuesday, saying he misspoke and had meant to say that he did believe that Russia interfered in the election. But he then muddled that answer by stating that "other people" could have also been involved.