1. Malaysian Prime Minister Mahathir Mohamad arrives at a news conference
2. SOUNDBITE (English) Mahathir Mohamad, Malaysian Prime Minister:
"As far as we are concerned, we want proof of guilt."
(Reporter question off-camera: "That Russia did it? Is that what you say?")
"Yeah, but so far there's no proof, only hearsay."
3. Close of reporter
4. Wide of media at presser
5. SOUNDBITE (English) Mahathir Mohamad, Malaysian Prime Minister:
"We are very unhappy because from the very beginning, it became a political issue on how to accuse Russia of the wrong doing. Even before they examine, they already said, 'Russia' (is involved). Now they say they have proof. It's very difficult for us to accept that."
Malaysian Prime Minister Mahathir Mohamad has rejected the implication that Russia may have been involved in the downing of Malaysia Airlines Flight 17 over Ukraine in 2014.
Mahathir says he doesn't think the findings of an international investigative team are true as it was based on hearsay.
He says Malaysia is "very unhappy" that the investigation became "a political issue on how to accuse Russia of the wrong doing."
The investigation team last year said it was convinced that the Buk missile system used to shoot down the aircraft came from the Russian army's 53rd Anti-Aircraft Missile brigade, based in the Russian city of Kursk.
On Wednesday, investigators charged four people with murder, including a prominent eastern Ukrainian separatist commander.