Washington (CNN) Republican Sen. John Kennedy on Monday backtracked on claims he made a day earlier that no one can be sure it was only Russia that tried to interfere in the 2016 presidential election, saying he misunderstood the question and that he sees no evidence that Ukraine participated in the hacking.

"I was wrong," Kennedy told CNN's Chris Cuomo on "Cuomo Prime Time." "It was Russia who tried to hack the (Democratic National Committee) computer. I've seen no indication that Ukraine tried to do it."

The about-face comes a day after the Louisiana Republican boldly told host Chris Wallace on "Fox News Sunday" that he wasn't sure who participated in the hacking of the DNC's server in 2016, despite the fact that the intelligence community has unanimously said Russia was behind the election meddling.

"Who do you believe was responsible for hacking the DNC and Clinton campaign computers, their emails. Was it Russia or Ukraine?" Wallace asked.

"I don't know. Nor do you. Nor do any of us," Kennedy replied.

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