8 year old Sandra Cantu is missing. Gone since Friday, mystery to her disappearance abounds. Since authorities are not quite sure what has happened to the girl, an Amber Alert has yet to be issued.

“It is our belief that she is alive and unharmed,” said Sgt. Tony Sheneman of the Tracy, Calif., police, who are coordinating a search for the girl with the FBI. More than 200 volunteers combed the trailer park and surrounding area over the weekend, and the search for the girl is ongoing.

“Until we have evidence that an abduction has occurred, we’ll handle this as a missing person,” Sheneman said.