Washington (CNN) Sen. Kamala Harris is considering endorsing former Vice President Joe Biden for president ahead of the California primary, a source close to the California Democrat tells CNN.

Harris on Friday did not deny the New York Times report that she is weighing endorsing Biden when asked by CNN.

"I am talking to everyone and no one. I am talking to my team, I'm talking to my colleagues about this (impeachment) trial, that is my entire focus," Harris said. She is serving as a juror in the ongoing Senate impeachment trial of President Donald Trump.

Harris told CNN, "The fact is I have not made a decision. I haven't made a decision about who, I have not made a decision about when."

She and Biden have largely mended their relationship since a tense exchange at the June presidential debate , where she confronted him over his decades-old fight against busing to desegregate schools, according to the source. At the debate, Harris delivered a blunt, pointed attack that mixed her personal story and race, which put Biden on the defensive.

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