Police continue to investigate an assault in Santa Rosa that left a man badly beaten early on Thanksgiving Day. Officers were called to a report of a physical fight at a Chevron gas station at 701 Mendocino Ave. at around 2:40 a.m. Thursday morning, according to Santa Rosa police. Arriving officers found an injured and unconscious man on the ground and several subjects in the area, and two of them – possibly involved – were stopped from trying to flee the scene, police reported. The unconscious victim, 24-year-old Windsor resident Cory Debari, had apparently been involved in the fight but was continually assaulted after he became unconscious and was on the ground. He was taken to a hospital with serious injuries where he remained in a critical care unit on Monday, according to police. Officers arrested 22-year-old Santa Rosa man Robert Upshall at the scene after determining him to be the prime suspect in the brutal assault, police said. Upshall was booked at Sonoma County jail for battery with serious injury. Detectives served a warrant at Upshall’s home on Monday and recovered physical evidence pertaining to the assault, according to police. Please call the Fugitive Watch hot line at 1-800-9-CAUGHT (1-800-922-8448) or text us at 408-355-0999 or CLICK HERE to send a confidential email tip, if you know the name of this man or have any information that can help solve this crime. Copyright © 2009 by Bay City News, Inc. — Republication, Rebroadcast or any other Reuse without the express written consent of Bay City News, Inc. is prohibited.