The FBI has joined the search for an 8-year-old California girl who hasn't been seen since Friday night, about 60 miles east of San Francisco, MyFOX LA has reported.

Authorities say FBI agents, Tracy police and officers from about a dozen law enforcement agencies are looking for eight-year-old Sandra Cantu.

Sandra was last seen at 4:00 on March 27, when a surveillance video camera recorded her walking away from her family's mobile home. Her mother reported her missing at about 8 p.m..

She is Hispanic, 4 feet tall, and weighs 45 pounds, with brown hair and brown eyes. She was wearing a pink Hello Kitty T-shirt and black leggings.

A $2,000 reward is being offered by the FBI and Tracy Crime Stoppers for information concerning Sandra's whereabouts.

Anyone with helpful information is asked to call the Tracy Police Department at 209-831-4550 or the National Center for Missing and Exploited Children at 800-843-5678.

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