Anthony was acquitted a week ago on charges of killing her 2-year-old daughter Caylee in 2008. Anthony was found guilty on four charges of lying to law enforcement officers. She is to be released from jail Sunday.
The Chicago Sun Times reports that Casey Anthony will live in disguise, while the Washington Post says she may "change her name for protection."
Authorities are looking into allegations of witness tampering during the murder trial of Casey Anthony. Police would not say who was accused of witness tampering, but Orange County Sheriff Jerry Demings said it didn't involve Casey Anthony's mother, Cindy.
While police remained tight-lipped about the details, detective John Allen said the sheriff's office has interviewed some witnesses.
"In regards to where we will go, it really depends on what information we get and what people come forward to provide additional information," Allen said.
Meantime, prosecutors decided not to charge Anthony's mother with perjury for telling the court that she, not her daughter, searched for chloroform on the family computer.
Casey Anthony served with lawsuit
Anthony is being sued by a team that searched for her daughter Caylee.
When hundreds of volunteers fanned out across central Florida in the summer of 2008, they had an urgent mission - to find Caylee Anthony. What they didn't know was that the 2-year-old was already dead.
Texas Equusearch wants to recoup the $112,000 it spent on searches. The lawsuit claimed Anthony made misrepresentations to the group's founder, causing extensive, costly and time-consuming searches for Caylee.
"This is the money that really needed to go to families that need us. While we were doing that search, we were so involved, we had several families that called in and really needed our help, and we had to turn them down," said Tim Miller of Equusearch.
The Associated Press contributed to this report.
