Documents the state attorney's office in Orlando released Wednesday also show the girl's mouth was covered with silver duct tape that had been adorned with a heart-shaped sticker. Duct tape also was attached to her head.
A utility worker found the 3-year-old's body last December in woods near where she lived with her mother and grandparents. Her mother, 22-year-old Casey Anthony, has been charged with killing her.
The toddler was reported missing to authorities in July, almost a month after she was last seen. Her third birthday passed while she was missing.
Separately Wednesday, authorities released a recording of Casey Anthony talking to her parents during a jail visit last August.
Casey Anthony, 22, told her parents she was just as much a victim as anyone else in the case during the recorded visit at the Orange County Jail in Orlando.
At the time, Casey was in jail on charges related to the disappearance of her daughter Caylee. She was charged with first-degree murder in October.
In the video, Casey Anthony cried and got angry when pressed by her parents for information about Caylee's whereabouts. She even threatened to end the conversation.
"This is seriously the first time I've been angry, that I've been frustrated to the point where I can't even think straight at this moment," Casey Anthony said. "The worst part is nobody can see my side and I have to keep my mouth shut."
Caylee's remains were found in December by a meter reader in woods near where Caylee lived with her mother and grandparents. Four months earlier, meter reader Roy Kronk had made three phone calls to the Orange County Sheriff's Office about his suspicions that remains were in a bag he had spotted in those woods.
A sheriff's deputy responded to the woods but didn't see a need to investigate further. That deputy was removed from patrol duty this week pending an investigation into his response.
A former attorney for Casey Anthony's parents, George and Cindy Anthony, rewarded Kronk Friday with $5,000 for finding the remains. The attorney, Mark NeJame, said he had received $5,000 for his work on the case and felt it was right to give the money to Kronk.