Hundreds of pages of documents were released Friday morning in the Casey Anthony case including interviews with key witnesses and lab results.

Anthony, 23, is charged with first-degree murder in the death of her daughter, Caylee Anthony, whose remains were found in December near the Anthony family's east Orange County home. Caylee was 2 years old when she was reported missing in July, a month after she was last seen alive.

Included in the document release were lab results from evidence found in the Anthony home, Casey Anthony's car and in the woods where Caylee's remains were found.

According to the documents, detectives were trying to link evidence from all three locations, but based on the lab results so far, there is no conclusive scientific connection.

Scientists at the FBI lab examined Caylee's hair for foreign chemicals, specifically muscle relaxants and Xanex, but no chemicals were found. Scientists said it is still possible that Caylee was exposed to small amounts of the drugs.

A knife found in Casey's car had a clear, sticky residue on it, but tests did not prove that the knife was used to cut the duct tape found around Caylee's mouth. Results also showed the duct tape did not have any fingerprints on it.

Detectives also seized 22 pairs of Casey's shoes from the Anthony's home. Soil from the bottom of those shoes was compared to samples from the crime scene in the woods, but there were no matches.

An interview with Roy Kronk that was also included in the release has details of why the meter reader was in the woods the day he discovered Caylee's remains.

At the time of the discovery, Kronk told investigators he had walked off into the woods to relieve himself, but that was apparently not the case.

In the interview, Kronk told detectives he paid close attention when working in the area around the Anthony home because of a statement Casey Anthony made to her family

"I feel like she is close to home," Casey Anthony said in a videotaped visitation with her family.

Kronk seems to have kept that statement in mind when working in the area.

"My theory, well, real simple, was that she kept saying she was close," Kronk told detectives. "And it just made sense to me that if you were going to get rid of something like that, well, you would put it in a place where you knew there would be very little traffic whatsoever.

Kronk also called the sheriff's department in August when he said he spotted something suspicious in the same area where Caylee's remains were eventually found.

Similar document releases have occurred regularly over the past several months.

Anthony's attorney, Jose Baez, had already received the documents, which have been released as public record in the discovery process.

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