Man Who Brutally Murdered Monrovia Couple Killed in Prison

1May 2022

A state prison inmate serving a life sentence for brutally stabbing an elderly Monrovia couple to death in 2003 has died, and prison officials suspect his cell mate — also a convicted murder — of killing him, authorities said Sunday.

At approximately 2:05 a.m. Saturday, officials at Kern Valley State Prison in Central California discovered 50-year-old Alfredo Valenzuela, unresponsive in the cell he shared with 36-year-old Noe Herrera during a security check, according to the California Department of Corrections and Rehabilitation.

Noe Herrera is suspected of murdering his cell mate Kern Valley State Prison in Central California.Staff attempted life-saving measures, and Valenzuela was taken to the institution’s treatment and triage area. However, he was pronounced dead at 2:31 a.m.

Officials said Valenzuela’s next-of-kin has been notified.

Herrera was removed from the cell, and has been rehoused at the institutions Administrative Segregation Unit pending the homicide investigation.

Valenzuela was sentenced in Los Angeles County in November 2010 to a life-without-parole sentence for two counts of first-degree murder, first-degree burglary and vehicle theft.

Valenzuela murdered Charles “Clark” Shaum, 78, and his wife Bernice Shaum, 70, on either the night of July 25 or the early morning hours of July 26, 2003, after breaking into the couple’s Monrovia home.

In a 2003 interview conducted by detectives, Valenzuela told police he climbed through a window intending to burglarize the couple’s home and landed on top of Bernice Shaum.

He stabbed her more than 40 times, then stabbed her husband 113 times, prosecutors said during the trial.

50-year-old Alfredo Valenzuela, serving a life sentence for the brutal murder of an elderly Monrovia couple in 2003, was found unresponsive in his cell. His cell mate is suspected of murder.His attorney argued that Valenzuela suffered from brain damage and was on a 10-day methamphetamine binge when he committed the murders.

Valenzuela’s girlfriend, Shawna Lenora Robles, was tried separately and also convicted of first-degree murder for her role in the killings. Prosecutors said she waited outside the bedroom window while Valenzuela stabbed the woman, then was let into the house by her boyfriend and hit Clark Shaum with bolt cutters.

Prosecutors said that after the killings, Valenzuela and Robles stole several items from the home including a truck.

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Herrera was received by the CDCR in August 2019 from Santa Barbara County with a life-with-parole sentence for second-degree murder and attempted second-degree murder.

The Kern County Coroner’s Office will determine the official cause of death. The case is being investigated as a homicide.

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