UPDATE: Pleasanton police say Ana was found in San Jose on Wednesday.
Pleasanton police are asking for the public's help in finding 13-year-old Ana Elizarraras.
Friends and family haven't heard from her since Dec. 1, when she was riding in a car with three unknown men.
Investigators say, while she left home willingly, she is considered at-risk because of her age.
Elizarraras was last seen wearing black pants and a blue-green sweatshirt with the word "Diamond" on the front.
Anyone with information on Ana's whereabouts is asked to call Pleasanton police at (925) 931-5100.
