Russia's ambassador to the U.S. on Wednesday said the Trump administration needs to provide proof that Russian officials meddled in the 2016 election, or stop talking about it.

[More: Putin denies 2016 election interference, offers to help interrogate accused Russians]

"As for interference, to paraphrase a Chinese proverb, one cannot make a tiger of one hundred mice," Ambassador Anatoly Antonov said, according to Russia's state-owned news service Tass. "No matter how many accusations, the key demand is to furnish evidence."

"The U.S. wants to announce a verdict first and then have a conversation," Antonov added.

Russia has also been blamed for organizing an assassination attempt against a former Russian official living in England. But in that case, Antonov noted, U.K. officials at least hedged by saying it is "highly likely" Russia was involved.

"[B]ut now some just say that Russia did interfere in U.S. domestic affairs," he said. "This is total nonsense. Russian President Vladimir Putin put it clearly at the joint press conference in Helsinki."

Putin rejected the accusation that Russia tried to influence the 2016 presidential election, just days after special counsel Robert Mueller indicted 12 Russian officials for stealing Democratic emails and leaking them.

Trump also downplayed Russia's involvement during his summit meeting with Putin in Helsinki, but on Tuesday walked back those comments and said he does trust U.S. intelligence officials who say Russia was meddling.