Russian Foreign Minister Sergei Lavrov said Moscow was hopeful the investigation into a downed airliner over eastern Ukraine would be "objective and respect a presumption of innocence."
"Only the honest, open participation of all those who have access to information about the crash can be regarded as normal. Anything else we will consider deceitful attempts to influence the investigation, putting presumption of innocence in doubt," he told a news conference.
Mr Lavrov also said Russia was hopeful that international monitors from the Organisation for Security and Co-operation in Europe could be deployed along the Russia-Ukraine border.
The mother of the three Australian children killed on flight MH17 told a memorial service her "arms would always be reaching for them."
A woman has apparently posted pictures of herself on social media with mascara looted from the Malaysian Airlines flight MH17 crash site.
A large section of plane wreckage and everyday carry-on items like chocolates remain scattered among the wild flowers at the crash site.