Mystery solved? A decade later, it's still not known why Casey Anthony allegedly waited a month before reporting her daughter Caylee Anthony missing — but her attorney Jose Baez had a theory behind the little girl's disappearance during her mom's murder trial: She drowned in the family's swimming pool.

In 2008, Casey was charged with first degree murder, aggravated manslaughter of a child, aggravated child abuse and providing false information to law enforcement after her two-year-old daughter's body was found amid claims she was kidnapped by the babysitter. During opening statements at Casey's trial, her lawyer seemingly provided jurors with all the answers, including the exact date of her death and an explanation.

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"How in the world can a mother wait 30 days before ever reporting her child missing? That's insane, that's bizarre," Jose said, according to ABC News. "The answer is actually relatively simple. She never was missing. Caylee Anthony died on June 16, 2008 when she drowned in her family's swimming pool." He went on to claim that Casey's father George Anthony found her body and helped dispose of it.

However, six years after Casey was found not guilty, her father denied the drowning theory created by her defense team. "I don’t believe [the drowning]. That’s a bunch of bull to me," he said in 2017. "That’s too easy of a story to bring up ‘cause if that would’ve happened, I think my daughter would’ve at least had the common decency or common sense inside to call 911 and say something. That’s a bunch of crap."

True crime aficionados agree with her dad, taking to social media over the years to present evidence Caylee's death was not a "simple" accident. "So if Caylee Anthony 'DID' drown in the pool, why was there duck tape covering her mouth? What would be the point if she had already died?" one person asked. Another pointed out, "Why else would there be 84 chloroform searches on her computer and chloroform in her car!?"

It doesn't help that Casey is also not sure if her daughter drowned or not — despite what her attorney said at the time. "Everyone has their theories, I don’t know. As I stand here today I can’t tell you one way or another," she said last year in an interview with The Associated Press. "The last time I saw my daughter I believed she was alive and was going to be OK, and that’s what was told to me."

Today, Casey's parents George and Cindy are still confused over how their daughter could be accused of murder. "Casey was just a very spirited child," Cindy explained during Monday night's A&E's special, Casey Anthony's Parents Speak. "She had a lot of energy, she was just the light of our lives. She made people smile. Casey was very popular. She had tons of friends and lots of little boyfriends."