No determination has been made in the cause of death of a Tehama County Jail inmate. The sheriff's office calls the death of 62-year-old Edward Jay Robinson "suspicious". The Corning man had been behind bars since Wednesday of last week, when he was arrested for possession of a dirk or dagger, brandishing, trespassing, and public intoxication. Tuesday morning, jail officials say Robinson used a food tray to damage a fire sprinkler head, causing flooding in the housing unit. Robinson was handcuffed and escorted to an observation cell in the booking area. When guards returned to check on him they found Robinson had stopped breathing. CPR was started and Robinson was taken to Saint Elizabeth Hospital, where he was declared dead. An autopsy performed Thursday was inconclusive, and a ruling is awaiting the results of toxicology tests.