From WFTV newsroom:

ORANGE COUNTY, Fla. – Did Casey Anthony kill her own daughter with chloroform? Eyewitness News has learned someone was looking up the recipe to cook up the chemical on Casey’s home computer around the same time Caylee disappeared.

There was evidence of high levels of chloroform in the trunk of Casey’s car and sheriff’s investigators found that someone on Casey Anthony’s computer was researching not where to buy chloroform, but how to make it yourself, which can be done easily.

Eyewitness News legal analyst Bill Sheaffer says, if you were up to no good, there would be an advantage to making it as opposed to buying it.

When you Google “how do you make chloroform,” more than a million websites are listed with instructions. On the first one, page one had an explicit warning about chloroform’s dangers, calling the chemical extremely dangerous and unpredictable and warning never to allow children to come near chloroform.

FBI lab tests show high levels of chloroform in the trunk of Casey’s car, where investigators say Caylee’s body had been. And there was a mysterious stain in the trunk along with Caylee’s hairs and dirt.

“Another piece of evidence in the circumstantial chain,” Sheaffer said.

Sheaffer said it’s significant because, if Casey made the chloroform as opposed to buying it, she could have been trying to cover her tracks. Buying it would have generated some sort of record.

“This way certainly, she could argue, ‘Alright, I was interested in looking into how to make chloroform, but I never did.’ Or, ‘That’s why you smelled chloroform in the trunk area, because I was experimenting in making it,’” Sheaffer said.

Record or not, the jury would be faced with a compromising question for Casey.

“Why would you need to make chloroform. For what purpose?” Sheaffer questioned.

Last week, the Orange County grand jury heard from the FBI and one of the sheriff’s computer investigators and that information is going to be released to the public very soon.