(KRON) -- The Oakland Police Department is searching for a missing 15-year-old boy last seen Wednesday. (Oakland Police Department) Santos Pablo Calmo was last seen around 10 a.m. on the 950 block of 40th Street in Oakland, police reported. He is described as a Hispanic boy, 5'4", 130 pounds, with a black buzzcut and brown eyes. He was last seen wearing a black and white hat, a white T-shirt, blue jeans, and black shoes. He is considered at-risk due to his age. He has been diagnosed with autism, police said. Anyone with information on Pablo Calmo’s whereabouts is asked to contact the Oakland Police Department's Missing Persons Unit at (510) 238-3641. ...read more read less