This is what Ukraine, Russia, Malaysia Airlines and others are saying about the MH17 crash. There are claims the passenger jet, with nearly 300 people on board, may have been shot down by a missile. All the passengers and crew are dead.

Malaysia Airlines

Malaysia Airlines confirms it received notification from Ukrainian ATC that it had lost contact with flight MH17 at 1415 (GMT) at 30km from Tamak waypoint, approximately 50km from the Russia-Ukraine border.

Flight MH17 operated on a Boeing 777 departed Amsterdam at 12.15pm (Amsterdam local time) and was estimated to arrive at Kuala Lumpur International Airport at 6.10 am (Malaysia local time) the next day.

The flight was carrying 280 passengers and 15 crew onboard.

Ukraine president Petro Poroshenko

This is not an incident or catastrophe, it is a terrorist attack.

We 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.

Malaysian prime minister Najib Razak

I am shocked by reports that an MH plane crashed. We are launching an immediate investigation.

Prime Minister Tony Abbott

On reports MH17 was shot down:

Look, we just have all sorts of reports and claims flying around. That's all we have at the moment - reports and claims. I'm very conscious of the fact that the Ukrainian president has made that statement (on the plane being shot down).

I believe they've been other statements from people in authority in Ukraine, but we just can't say.

If it does turn out that this aircraft was brought down by a surface-to-air missile, there is no doubt this would be - under those circumstances - an unspeakable crime and the perpetrators should swiftly be brought to justice.

On what the Government can do for families:

We can assure families that at the highest levels of government we feel for them. We grieve with them, we pray for them. That's the first thing we do, and the second thing we do is to try to provide whatever practical assistance we can in terms of counsel, in terms of repatriation of remains and so on.

This is just a very, very sad time made worse by reports that it might be a crime rather than an accident.

Australian Department of Foreign Affairs

The loss of Malaysia Airlines Flight MH17 over Ukraine is a tragedy.

Initial reports indicate there were 295 people on board and there are no survivors of the crash. We have grave concerns that a number of Australians may have been on board the flight. Officials are urgently working to seek confirmation with relevant authorities.

If you have any concerns for the welfare of Australian family or friends, you should attempt to directly contact them.

If you are unable to contact them and still hold concerns for their welfare, you should call DFAT's 24-hour Consular Emergency Centre on +61 2 6261 3305 from overseas, or within Australia on 1300 555 135.

Spokesman for Russian president Vladimir Putin

The president of Russia asked the prime minister of Malaysia to convey his deepest sympathy and support to the victims' families.

US president Barack Obama

The world is watching reports of a downed passenger jet near the Russia/Ukraine border, and it looks like it may be a terrible tragedy.

I 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.

And as a country, our thoughts and prayers are with all the families of the passengers, wherever they call home.

Boeing

Our thoughts and prayers are with those on board the Malaysia Airlines airplane lost over Ukrainian airspace, as well as their families and loved ones.?

Boeing stands ready to provide whatever assistance is requested by authorities.