Authorities are working on dozens of tips in their search for a missing 2 year old central Florida girl.

Orange County Sheriff's officials say Caylee Marie Anthony mysteriously vanished more than a month ago.

Her mother, 22 year old Casey Marie Anthony, was arrested after she went to police this past week to report the disappearance. She's charged with child neglect and criminal obstruction.

Officials say the woman told detectives she had dropped off her daughter at a baby sitter last month but hadn't seen her since.

On Friday, authorities used cadaver-sniffing dogs to search in the back yard of a home belonging to the woman's parents.