Ukrainian president, Petro Poroshenko, is pointing the finger at the Russians for the suspected terrorist attack but Russian leader, Vladimir Putin is blaming Kiev for the downing the passenger plane which crashed in the settlement of Grabovo in Donetsk region.
Apart from offering his sympathies at a Russian cabinet meeting Putin alleged the Ukraineโs leaders were responsible for the fighting in eastern Ukraine between government troops and pro-Russian rebel forces which he said ultimately caused the crash.
โI want to point out that this tragedy wouldnโt have happened if there was peace in this land, or at least if fighting hadnโt resumed in the southeast of Ukraine,โ Putin said. โAnd undoubtedly, the state on whose territory this happened is responsible for this awful tragedy.โ
While the two nations direct blame at each other Malaysiaโs Prime Minister, Najib Razak, vowed โno stone will be left unturnedโ to learn what happened.
โThe Ukrainian authorities believe that the plane was shot down,โ Mr Razak said. โAt this stage, however, Malaysia is unable to verify the cause of this crash but we must and we will find out precisely what happened.โ
โIf it transpires that the plane was indeed shot down, we insist that the perpetrators must swiftly be bought to justice,โ he added.
Leaders from around the world have offered their reactions to the tragedy:
Prime Minister Tony Abbott
Australiaโs PM offered his โdeepest condolencesโ to everyone connected with the flight.
โThis is a terrible tragedy for them, their loved ones, their families,โ Mr Abbott told ABC Radio this morning.
โWe are gravely concerned there were Australians on board this flight. We are profoundly concerned that the plane may have been shot down,โ Prime Minister Abbott told reporters.
โIf this was a crime a crime rather than an accident, itโs an unspeakable crime and the perpetrators must be brought to justice.โ
Ukraine president Petro Poroshenko
โThis is not an incident or catastrophe, it is a terrorist attack.
โWe do not exclude that the plane was shot down and confirm that the Ukraine Armed Forces did not fire at any targets in the sky.โ
Malaysian prime minister Najib Razak
โWe are launching an immediate investigation.
โThe aircraft did not make a distress call.
โMalaysia airlines is in the process of notifying the next of kin of the passengers and crew.
โNo stone will be left unturned.
โIf it transpires that the plane was indeed shot down, we insist that the perpetrators must swiftly be bought to justice.
Russian president Vladimir Putin
โThe President of Russia asked the Prime Minister of Malaysia to convey his deepest sympathy and support to the victimsโ families,โ said a spokesperson for the Russian leader.
US president Barack Obama
โThe world is watching reports of a downed passenger jet near the Russia/Ukraine border, and it looks like it may be a terrible tragedy.
โI have directed my national security team to stay in close contact with the Ukrainian government. The United States will offer any assistance we can to help determine what happened and why.
โAnd as a country, our thoughts and prayers are with all the families of the passengers, wherever they call home.โ
Dutch prime minister
Netherlands PM Mark Rutte released a statement to express his dismay over the flight which took off from Amsterdam.
โI am deeply shocked by the tragic news about the crash of Malaysia Airlines flight MH17 from Amsterdam to Kuala Lumpur via Ukrainian territory,โ he said. โVery much is still unclear about the facts, the circumstances and the passengers.โ
Malaysia Airlines
At the first sign of trouble Malaysia Airlines took to Twitter:
โMalaysia Airlines has lost contact of MH17 from Amsterdam. The last known position was over Ukrainian airspace. More details to follow,โ tweeted the airline.