MOSCOW, April 9. /TASS/. The British authorities are refusing to cooperate with Russia over the cases of Berezovsky, Litvinenko, and the Skripals, Deputy Prosecutor-General Saak Karapetian told a news briefing on Monday.

"In all three cases, the authorities refused to cooperate with Russia, thus ruling out any chance for anyone to assess their objectivity," the official said.

The deputy prosecutor also noted that in all three cases, individuals who were wanted in Russia for committing grave crimes were used as key provocateurs.

In addition, "in all three cases there were allegations that poisonous substances had been used and charges were hurled against Russia."

Berezovsky's death 

The Russian side has not received documents from the UK on the death of Russian tycoon Boris Berezovsky and its cause yet, Karapetyan stated.

"Russia’s authorities have been asking British officials to provide documents confirming the death of Berezovsky and its cause for a year following Berezovsky’s death. However, we haven’t received this document so far, despite Britain’s obligations under the Convention on Legal Aid," the deputy general prosecutor said.

The United Kingdom refused to extradite persons on Russia’s wanted list for embezzlement after they declared themselves "enemies of the Putin regime", the prosecutor has added.

"We analyzed the refusals for extradition. All it took was to declare themselves an enemy of the Putin regime, and after that they were immediately granted refugee status," Karapetyan said, speaking about the results of the UK’s responses over the past 15 years to 83 inquiries for the extradition of about 60 persons most of whom were accused of or were convicted for large-scale embezzlement.