The chief archivist of Russian's Federal security service FSB insisted Tuesday that it holds the human remains of Adolf Hitler, thus contradicting U.S. researchers' claims to the contrary.

In an interview with the newspaper Izvestiya, Vasily Khristoforov, director of the FSB archive, disputed the results of a September 2009 study by U.S. researchers Nick Bellantoni and Linda Strausbaugh which said the DNA of the remains was "unambiguously feminine."

"These researchers never got in contact with us," Khristoforov said, adding, "with what could they have compared the DNA?"

Moscow is the only place with the mortal remains of Hitler, Khristoforov said.

In addition to Hitler's jawbone and a fragment of his skull with a bullet hole in it, brought to Moscow in 1948, the FSB archive contains the blood-stained arm rest of the sofa in the bunker where Hitler committed suicide on April 30, 1945, Khristoforov said.

The FSB archive director affirmed that the corpses of Hitler, his wife Eva Braun, the Goebbbels couple and their six children were burned in 1970 and their ashes thrown into a river.

"This was probably a good solution. Otherwise the place of burial would have become a pilgrimage site for Fascists, who can be found everywhere - unfortunately in Russia as well," Khristoforov said.