Hollande made the comments during a phone call with Ukrainian President Petro Poroshenko Saturday afternoon, Xinhu quoted a statement released by the Elysee Palace, the French presidential palace.
Both the leaders stressed on the crucial importance of establishing clear evidence of facts in order to draw all the consequences of this terrible tragedy.
For this purpose, any hindrance to the work of the International Civil Aviation Organisation (ICAO) investigators or observers from the Organisation for Security and Cooperation in Europe cannot be tolerated. As requested by the UN, they must proceed without delay to the international investigation that will help establish the truth.
The two leaders agreed to continue their joint work and stay in close contact, the statement said.
The Boeing 777 passenger plane of the Malaysia Airlines crashed in eastern Ukraine en route from Amsterdam to Kuala Lumpur Thursday, killing all 298 people aboard.