An off-duty Yuba County Sheriff's Deputy involved in an assault in Chico has lost his job. Nelson Manana was involved in fight in downtown Chico that left 30-year-old Felipe Zabala unconscious on St. Patrick's Day. He was arrested for various assault charges as well as threatening a witness. After the arrest Magana, a deputy with the Yuba County Sheriff's Office, was placed on administrative leave. The Sheriff's Office announced Thursday that Magana is no longer a deputy with the department. According to the Appeal Democrat, Magana had been with the Yuba County Sheriff's Office since 1999. His criminal trial, in Butte County, is set to begin on Novemember 10th.