The San Luis Obispo County Sheriff’s Office has released the cause of death for the Oceano man found killed in his home in January. Investigators say 90-year-old Larry Bross died as a result of multiple chop force traumatic injuries. The investigation is ongoing. Anyone who may have information regarding this case is asked to contact the San Luis Obispo County Sheriff’s Office. A reward of up to 10,000 dollars is being offered for information that leads to the arrest and conviction of the person responsible for Bross’s death.