Casey Anthony Trial: Did Cindy Anthony Really Search for Chloroform?

July 2, 2011— -- Closing arguments are set for Sunday in Casey Anthony trial after the prosecution called its final witnesses to try to undermine Casey Anthony's mother Cindy's claim that she, not Casey made computer searches that are a key to the murder case.

The judge has given both sides the day off so they can prepare for closing arguments.

On Friday, prosecutors tore Cindy Anthony's testimony apart and now there are serious questions about whether Cindy Anthony could be brought up on perjury charges.

Casey Anthony is accused of killing her 2-year-old daughter Caylee Anthony in 2008 and could face the death penalty if convicted.

Earlier in the trial, Cindy Anthony stunned prosecutors when she said she was responsible for searches for chloroform on the family computer in March 2008, months before little Caylee Anthony disappeared.

The prosecution had argued in its opening statement that it was Casey Anthony who had searched for chloroform 84 times as well as "neck breaking" and "household weapons."

The prosecution argues that Casey Anthony killed her daughter with chloroform and duct tape placed over her nose and mouth.

Casey Anthony: From Loving Mother to Stressed Out Inmate

The computer search allegations are also key to proving premeditation. The defense has argued that Caylee accidentally drowned in the family pool and that George Anthony, Casey Anthony's father, helped hide the body.

In Friday's testimony, computer use records shown to jurors indicated that Cindy Anthony was at work during the time she claimed to have searched for chloroform from home.

Computer records revealed that someone using Cindy Anthony's username was logged on to her computer at the hospital where she worked for nearly nine hours on March 17, 2008 and March 21, 2008, the days computer searches for chloroform were done by someone in the Anthony family home.

Cindy Anthony's one-time supervisor at the hospital where she worked as a nurse testified that she oversaw Cindy Anthony's time sheets for their accuracy and would never falsify a time sheet and it would be illegal for Cindy Anthony to have falsified them.

Cindy Anthony previously claimed that she'd searched for chloroform because she suspected her smallest dog might be getting poisoned from eating bamboo leaves in the backyard. Her search started with "chlorophyll" and spiraled to "chloroform," she said.

Computer expert Kevin Stenger from the Orange County Sheriff's office testified Friday that he found no reference to "chlorophyll" in searches done on the Anthony family's desktop computer in March 2008.

The only reference to dogs was a search for fleas, he said. References to bamboo referred to furniture and a tiki bar.

Cindy Anthony had also said that a pop-up with the words "neck breaking" was on her screen when she claimed she searched for chloroform.

Stenger said that somebody searched for "neck breaking" and it did not come from a pop-up.