Casey Anthony, the Florida woman who was tried and acquitted in the death of her young daughter, broke her silence Tuesday to CNN's Piers Morgan, saying she was rightly found not guilty.

"Obviously I didn't kill my daughter," Anthony said, Morgan reported on "Piers Morgan Tonight." The two spoke for roughly 10 minutes by phone.

"If anything, there's nothing in this world l've ever been more proud of, and there's no one I loved more than my daughter. She's my greatest accomplishment," she said.

Anthony, 26, was acquitted last summer of murder charges in the 2008 death of Caylee, 2, but was convicted of four counts of lying to authorities investigating the child's disappearance. She was given credit for time already spent behind bars, however, and was released from jail July 17.

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