"We gave the Dutch side raw radar data which we discovered a month ago," foreign ministry spokeswoman Maria Zakharova told AFP.
She spoke after Dutch Justice Minister Ard van der Steur told parliament yesterday that Russian prosecutors had handed "a packet of information" to the Dutch embassy in Moscow.
He said he could not give details because the contents needed to be assessed to see if they were useful for the investigation.
The ministry released the images to journalists two days before the Dutch-led international team of criminal investigators released initial findings on September 28 into the downing of Malaysia Airlines flight MH17 that found the missile was transported from Russia.
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The Dutch-led investigative team, which has spent two years investigating the crash that killed all 298 people on board the Boeing 777, said at the time that Russia had not given them this new radar data.
The tragedy saw the European Union slap tougher sanctions on Russia -- blamed by the West for being behind the rebellion. The punitive measures remain in place as the fighting drags on.
But Russia and the rebels have consistently denied any role in downing the plane, and have instead blamed Ukrainian government forces.