SANTA ROSA, Calif. (AP) — A Northern California sheriff's deputy who shot and killed a 13-year-old boy is returning to duty. The Santa Rosa Press Democrat reports Deputy Erick Gelhaus will be on a desk assignment while the Sonoma County district attorney reviews an investigative report and determines whether he committed criminal wrongdoing. Gelhaus has been off patrol since shooting Andy Lopez seven times on Oct. 22 after mistaking a BB gun the boy was carrying for an assault rifle. Assistant Sheriff Lorenzo Duenas said Friday that Gelhaus underwent mental health screening and was cleared to come back to duty this week. The shooting has led to numerous protests, and Duenas says Gelhaus has received threats. Lopez's family has filed a federal civil rights lawsuit seeking damages.