19-year-old Jann Derrick was last seen at his parent’s San Lorenzo home on October 22.
He is described as standing 5-feet-8 inches tall weighing 110 pounds.
Data from his Clipper card, used for public transportation, show he exited the Montgomery station in San Francisco that afternoon.
Anyone with information is urged to call the Alameda County Sheriff, 510-667-7721.
In a separate case, 15-year-old Ambra del Mundo of Concord, California has been missing since October 25th.
She is described as standing 5’0, weighing 100 pounds.
Anyone with information on her is asked to call the Concord police department at 925-671-3333