CONCORD (CBS SF) — Police in Concord are searching for a nonverbal autistic man from Pittsburg who went missing Friday afternoon, according to authorities.

18-year-old Tony Doan reportedly walked away from Loma Vista Adult Education Center at around 2:30 p.m., according to a tweet by the Concord Police Department.

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Tony Doan, autistic man who went missing in Concord (Concord Police)

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Doan is from the Pittsburg area and is not familiar with Concord. He is an Asian man, about 5’6 tall and approximately 150 pounds. Doan was last seen wearing a light blue t-shirt, grey sweatpants, and grey sneakers.

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Anyone who sees Mr. Doan is asked to contact the Concord Police Department dispatch at 925-671-3333.