Hillary Clinton on Tuesday told ABC News’ David Muir that using a personal email account while Secretary of State was a “mistake” and that she is “sorry” for it.

“That was a mistake. I’m sorry about that. I take responsibility,” the Democratic presidential candidate told Muir in an exclusive interview in New York City.

This is the farthest Clinton has gone yet in offering an apology for her use of a private email server while Secretary of State.

Clinton told the Associated Press on Monday that she would not apologize for it because “what I did was allowed.”

Read the article “Hillary Clinton Apologizes: Email Set-up “a Mistake. I’m Sorry”” on abcnews.go.com.