Malaysia said Saturday intelligence reports on the downing of Malaysia Airlines Flight 17 are "pretty conclusive" and investigators are now working on assembling physical evidence that can be presented to court.

"First of all, we do have the intelligence reports [on] what happened to MH17 and the reports are pretty conclusive," Prime Minister Najib Razak said at a joint news conference with Australia Prime Minister Tony Abbott on his first official visit to Malaysia.

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