Casey Anthony, the mother of 3-year-old Caylee Marie Anthony, has been behind bars since shortly after she told police July 16 her daughter had already been missing for more than a month. Prosecutors recently filed formal charges against her for child neglect, a felony, and filing a false statement to investigators, who have questioned her cooperation, the Orlando Sentinel reported Monday.

Caylee's grandparents, George and Cindy Anthony, have met with investigators and are towing a portable billboard with pictures of the missing child around the Orlando area. Meanwhile, an independent psychic-led team is doing its own driving across the region hoping to get a "feel" for Caylee's location.