The state attorney's office in Orlando, Fla., released reports and crime scene photographs Wednesday in the investigation into Caylee Anthony's death.

The items totaled 500 pages, The Orlando Sentinel reported.

Casey Anthony, the 3-year-old's mother, was charged with her murder before skeletal remains were discovered in December near the house where Anthony was living with her parents. She is being held without bail.

The documents include interviews with Anthony's friends that describe a troubled young woman who thought she was a bad mother and forensic reports. Duct tape found with the bones matched duct tape in the Anthony house, scientists said.

"Evidence on the body suggests that the child's death was not accidental but an intentional act," Detective Yuri Melich wrote in a Feb. 5 report that was . "As of this writing, there is nothing to suggest that anyone but Casey Anthony is responsible for the death and disposal of Caylee Anthony."

Among the items discovered with the body was a toddler-size pink T-shirt bearing the words "BIG TROUBLE comes small."