"We insist that before the situation with Crimea becomes clear, the Scythian gold must be handed over to Kiev to keep it in the historical and art museums," he said.
The Dutch side on August 20 decided to prolong the exhibition in the Allard Pierson Museum, and the exhibits would not be handed over so far either to Ukraine or to Crimea, Nishchuk said.
Ukraine intended to sue the Russian side, Crimean authorities, to return the Scythian gold to Kiev, he added.
According to media reports, the museum in the Netherlands does not intend to hand over the exhibits to Ukraine or Crimea until a judge takes a decision or the parties come to an agreement.
The Russian Culture Ministry will not interfere in the situation over the Scythian gold, as all the issues must be settled by the museums, the Russian culture minister's advisor Kirill Rybak told ITAR-TASS on Thursday.
There are museums that have sent exhibits, and there are museums that have received them. "They have definite agreements that, in our view, must be followed," the official said.
"As far as we know, there are no reasons for anxiety. Normal talks are going on," he added.