Defense: Caylee's Mother's Diary Was Written in 2003

Casey Anthony's explosive journal entry may have been written before Caylee was born

Photo: MCT/Orlando Sentinel/Landov

One day after Casey Anthony’s diary entries were released by the State Attorney’s office, her defense team is calling the evidence into question.

The entry was notable because it was dated June 21, just five days after Florida toddler Caylee Anthony went missing. “I have no regrets, just a bit worried,” Casey Anthony wrote. “I completely trust my own judgment. I know that I made the right decision. I just hope that the end justifies the means. This is the happiest that I have been in a very long time.”

But Anthony’s defense counters that the entry was not written in 2008, but in 2003 instead, when Casey was just 16 years old. The opposite page of the diary has “03” written the upper left hand corner.

“It’s in the same color ink and the same handwriting,” defense spokeswoman Marti Mackenzie tells PEOPLE. “This was written in 2003, not 2008.”

On the Today show Thursday, lead attorney Jose Baez said, “This is before Caylee was even born.”

Sources within the police department tell PEOPLE that they have not yet authenticated when the diaries were written. “The investigation is continuing and there are ways to tell when this was written,” says a police source. “At this point, we can’t definitively say when this entry was written.”

When asked whether the entry could have been from 2003, the source responded, “That’s entirely possible. No one should jump to any conclusions yet.”

Casey Anthony, 22, is charged with first-degree murder in the death of her daughter, 2, and has pleaded not guilty. She is being held without bond at the Orange County Jail in Orlando, awaiting a trial expected to begin later this year.

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