"Here is what we know so far. Evidence indicates that the plane was shot down by a surface-to-air missile that was launched from an area that is controlled by Russia-backed separatists inside of Ukraine," he said. (Agencies)
"It's too early to guess what the intentions of those who launched these missiles. What we know right now, that a surface to air missile was fired. The shot was taken within the territory that is under the control of the separatists," Obama said, adding that the US is talking to the international community on this issue.
Obama, who spoke with his Russian counterpart Vladimir Putin, blamed Russia for the incident, saying that Russia provided sophisticated surface-to-air missiles to the Ukrainian separatist.
"He (Putin) has the most control over the situation. He has certainly not exercised (that)," Obama said.
"We also know that this is not the first time a plane has been shot down in eastern Ukraine. Over the last several weeks Russian-backed separatists have shot down a Ukrainian transport plane and a Ukrainian helicopter, and they claimed responsibility for shooting down a Ukrainian fighter jet. Moreover, we know that these separatists have received a steady flow of support from Russia," Obama said.
Noting that this is a wakeup call for the international community, Obama warned that this tragic event would have consequences.
Describing the death of nearly 300 people on board the plane as ‘an outrage of unspeakable proportions’, Obama said, "Our thoughts and prayers are with his family for this terrible loss," he said.
"This was a global tragedy. So there has to be a credible international investigation into what happened. The UN Security Council has endorsed this investigation, and we will hold all its members, including Russia, to their word," he said.
He also called for an immediate ceasefire between separatist and the government in Ukraine.
"In order to facilitate that investigation, Russia, pro-Russian separatists and Ukraine must adhere to an immediate cease-fire. Evidence must not be tampered with. Investigators need to access the crash site," Obama said.
"Here is what we know so far. Evidence indicates that the plane was shot down by a surface-to-air missile that was launched from an area that is controlled by Russia-backed separatists inside of Ukraine," he said.