Sandra Cantu of Orchard Estates Mobile Home Park in Tracy, California, is the subject of a massive search effort that now includes the FBI. 8-year-old Sandra Cantu went missing near her Tracy, Calif. home on March 28, 2009.

Police are concerned about Sandra's home's proximity to three major freeways that could have been used by an abductor to get the little girl out of town.  Cops have also been interviewing known sex offenders in the area.

Sandra was last seen wearing a pink "Hello Kitty" T-shirt, and black leggings.

If you have any information on the whereabouts of Sandra Cantu, please call our hotline at 1-800-CRIME-TV.

For more information on Sandra, please visit America's Most Wanted.