Preliminary FBI lab results show traces of chloroform in Casey anthony car/ The computer confiscated shows vists to webs sites about chloroform

(CNN) -- Preliminary FBI lab results show that there were traces of chloroform in the car of the mother of a missing Florida girl, according to a law enforcement source with knowledge of the investigation.

Casey Anthony's computer, confiscated within hours of her arrest in July on charges of child neglect, making false official statements and obstruction of justice, also showed visits to Web sites with information about chloroform.

The discovery of chloroform, a chemical compound that can be used to incapacitate crime victims, is a piece of evidence prosecutors will use in building the case of missing 3-year-old Caylee Anthony.

Earlier, investigators said they had found evidence of human decomposition in the trunk of Casey Anthony's car.

Law enforcement sources also suggested that a strand of hair found in the trunk of the car was Caylee's. full story CNN

This case is making my head spin. On Nancy Grace tonight they talked about the Chloroform but, the guest really didn't explain any reason for traces of chloroform. She should have the transcript up soon. I will post it here later.

Okay so what will the defense excuse be concerning the Chloroform. ?

Casey Anthony is innocent until proven guilty.

my prayers are with Cindy,George and Lee