Story highlights A US official said there's 'little doubt' Russia was behind hacking Democratic National Committee emails

Donald Trump said blaming him was a "deflection"

(CNN) There is "little doubt" Russia is behind the hack of Democratic National Committee emails, a US official told CNN on Wednesday.

The remarks follow a week-long episode where leaked DNC emails showed Democratic officials giving preferential treatment to Hillary Clinton. The emails inflamed supporters of her primary opponent, Bernie Sanders, during the Democratic Party's national convention, which led to widespread protest and the ousting of DNC Chairwoman Debbie Wasserman Schultz.

Asked about potential consequences for the hack, the White House described "a full range of options available to us in the government."

"That includes economic sanctions out of Department of Treasury. That includes a number of law enforcement measures that Department of Justice has announced and has taken action on," said spokesman Eric Schultz.

"The United States isn't going to pull any punches in terms of our response," he said.

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