(CNN) -- The U.S. State Department is countering Russian criticism of how American authorities are handling of case of a 3-year-old adopted boy who died in Texas. "What is very troubling about this case is that the Russians are making very wild accusations against the (adoptive) parents before they have information," a senior State Department official told CNN. "I think it is irresponsible of the Russians to say the parents did x, y or z before we find out what happened. In West Texas, the Ector County Medical Examiner's Office is investigating because of the "suspicious" nature of the boy's death, investigator Kim Harrington said.
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NEW: U.S. State Department says Russians have rushed to judgment
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NEW: Russian officials meet with brother, who also was adopted
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Governor of Russia's Pskov region suspends adoptions by Americans
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West Texas officials say the boy's death is suspicious, but no charges have been filed
Tuchak said his office is working to bring the brother back to his native Russia, even though the @placeholder parents have not been charged with any crime or publicly named.