VALLEJO (CBS SF) — Vallejo police released a photo Friday of a man they say has approached at least three young girls between the ages of 8 and 14-year-old.

Investigators said in two improper contact incidents the girls’ guardians’ chased after the suspect. In the latest incident the man was seen driving a white or silver Dodge or Chrysler minivan with a black rack top.

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He is described as a Hispanic man, 5 feet 10 inches, 170 pounds with dark hair and brown eyes. He has a distinct mole to the right of his nose and a tattoo on his right shoulder and he was wearing a baseball hat in each incident.

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Police believe there are additional unreported incidents involving the suspect.

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Anyone with information about the suspect is asked to call Detective Rob Greenberg at (707) 648-4280 or (800) 488-9383.