Investigators have finished talking to all the registered sex offenders living within a 5-mile radius of Somer Thompson's house in Florida, though none of them is considered a suspect in the girl's death.
Clay County Sheriff's spokeswoman Mary Justino also said Friday that no witnesses have come forward to say they saw the 7-year-old attacked or abducted.
Somer's body was found Wednesday by investigators sorting through tons of garbage in a Georgia landfill.
She vanished while walking home from her Orange Park school on Monday. Justino says investigators are collecting evidence from a vacant home along that road because the girl was last seen in front of it.
An autopsy has been completed, but authorities won't disclose their findings.
A North Carolina relative of a missing girl found dead in Georgia landfill says the family is "torn up" about the confirmation of her identity.
Authorities this morning tentatively identified the body found in a landfill as that of 7-year-old Somer Thompson, a north Florida girl who disappeared on her walk home from school.
An aunt, 43-year-old Laura Holt of Graham, said this morning the child's father and other family members are upset. The girl's father, Sam Thompson, also lives in Graham but Holt says he left the house to avoid reporters.
She hopes authorities will find her niece's killer.
Holt says the killer doesn't deserve to live. She says she doesn't understand how someone could kill a child and dump her body like a piece of trash.