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SLO man admitted to killing roommate, deputy says

Charles Chad Giese, 40, was arrested Monday on suspicion of murder.
Charles Chad Giese, 40, was arrested Monday on suspicion of murder. San Luis Obispo County Sheriff’s Office

San Luis Obispo County prosecutors filed a count of murder Wednesday against a San Luis Obispo man who reportedly confessed to killing his roommate after deputies found the body inside the manufactured home the two shared on the outskirts of San Luis Obispo.

The charge carries with it a criminal enhancement for using a deadly weapon — a baseball bat and a knife, according to the District Attorney’s Office — during a crime. If convicted, Charles Chad Giese, 40, faces 26 years to life in prison.

Walter Ernest Vallivero, 54, was found by deputies who were responding to a report of an “altercation” Monday morning at a home in the 600 block of Rancho Oaks Drive, in rural San Luis Obispo County about 2 miles west of Broad Street.

Deputies arrested Giese, who they said was Vallivero’s roommate, after initially calling him a “person of interest.”

Officials have released very few details about a possible motive other than that the argument between the roommates “escalated” at some point Sunday.

In the news release on Monday, the Sheriff’s Office only described Vallivero’s injuries as “caused by blunt force trauma.”

In a very brief synopsis of his full investigative report that was filed Wednesday along with the criminal complaint, Senior Sheriff’s Deputy Detective Nathan Paul wrote that the Sheriff’s Office had received a 911 call at 7:23 a.m. reporting that “an altercation” had occurred. The person reporting the crime — the document does not identify the party — told dispatchers that one person involved in the altercation was seriously injured and might be dead, Paul wrote.

When deputies arrived at the home, physical evidence found there indicated Vallivero’s death “was by traumatic means,” according to the report.

Paul interviewed Giese about 9:20 a.m. Monday. During that conversation, Paul wrote, Giese admitted to killing Vallivero on Sunday during an argument. No other details are provided.

Giese has no prior felony criminal history, according to San Luis Obispo Superior Court records.

As of Wednesday evening, he was being held without bail at San Luis Obispo County Jail.

He is scheduled to appear for his arraignment Thursday morning in San Luis Obispo Superior Court.

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