Russian Foreign Ministry Human Rights, Democracy and the Rule of Law Commissioner Konstantin Dolgov presented a demarche to a minister-counselor of the U.S. embassy, who was summoned to the ministry in Moscow on Friday, over significant deterioration of health of Russian citizen Konstantin Yaroshenko, who is serving a lengthy prison term at the Federal Correctional Institution Fort Dix under a U.S. court sentence, the Foreign Ministry said.

"It was emphasized on the Russian part that the U.S. authorities bear all responsibility for our compatriot's life and health," the ministry said.

Russia has repeatedly brought up the issue of the exacerbation of Yaroshenko's chronic diseases caused by "torture and humiliation he was subjected to during his arrest in Liberia and lack of proper medical aid," the ministry said.

"Unfortunately, no measures have still been made to improve the situation," it said.

The U.S. diplomats were informed of Russia's intention to arrange a visit to Yaroshenko at Fort Dix in the near future by a group comprising Dolgov, senior diplomats from the Russian Embassy in Washington and Consulate General in New York, and Russian doctors to organize Yaroshenko's qualified medical examination and determine his treatment.

"We have called on the U.S. authorities not to obstruct this mission and provide it with any possible assistance," it said.

Moscow expects a prompt and positive response from the U.S., taking into account the humanitarian aspect of the situation in which a human life is endangered, it said.

Yaroshenko was arrested in Liberia on May 28, 2010 on the charge of preparing to smuggle a large haul of cocaine and was deported to the United States.

The Russian pilot was sentenced to 20 years in prison on September 7, 2011.

Russian representatives have claimed that international law has been violated in this case, reasoning that U.S. special services have captured a Russian citizen in a third country and brought him to the U.S. in secret.

On August 15, Dolgov told Interfax that the U.S. court's decision declining an appeal in the Yaroshenko case makes it possible to use the 1983 European Convention on the Transfer of Sentenced Persons and that precedents of such cooperation between Russia and the U.S. already exist.

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