“But I want to tell you again, I don’t know anything about it, and on a state level Russia has never done this,” Putin said.
He pointed out that US politicians and media tried to divert attention from the leak itself with finger pointing.
"Does it even matter who hacked data of Mrs Clinton's election campaign office? The important thing is the content that was given to the public… There’s no need to distract the public’s attention from the essence of the problem by raising some minor issues connected with the search for who did it," Putin said.
In July, WikiLeaks published nearly 20,000 hacked emails that apparently showed DNC members discussing ways to undercut Clinton's rival Bernie Sanders in the race for the Democratic nomination.
The US presidential election is scheduled for November 8.