MOSCOW, September 24. /TASS/. Russia has received no official answers from either the United States or Ukraine regarding biological laboratories, Russian Deputy Foreign Minister Sergey Ryabkov told reporters.

"We have received no official answers from either Ukraine or the United States to the dozens of questions that have been raised," he said in response to a question about Ukraine’s violation of the Biological and Toxin Weapons Convention.

At the same time, Ryabkov pointed out that through the Russian Foreign Ministry and other relevant agencies, as well as "through the parliamentary commission and the commission investigating this activity, a huge amount of material has been accumulated, which remains among our most serious claims against our adversaries."

"There have been no substantive comments; they do not even bother, in this case I am referring to our American counterparts, to seriously deal with this, but this only exposes that they have no possibility to dispute the facts and specifics that we have," the Russian deputy foreign minister stressed.

"The issue remains in the public eye, and no one is abandoning it," Ryabkov concluded.