Attempted Robbery/Homicide Arrests 

August 14, 2026 – Sacramento County Sheriff’s Office officials report that nearly four months after a failed jewelry store robbery left a 72-year-old man dead, Sacramento County Sheriff’s Office detectives have made two arrests.

On April 18, 2026, deputies responded to a jewelry store in the 7400 block of Stockton Blvd. after multiple suspects attempted to rob the business. Investigators determined the group arrived in six recently stolen vehicles, including the one used to ram into the business. The suspects encountered an armed private security guard and fled. During the attempted robbery, the 72-year-old man was struck by the vehicle used to ram the business and suffered life-threatening injuries. He passed away 10 days later.

Automated License Plate Readers (ALPRs) were instrumental in solving this murder. ALPR information provided detectives with critical investigative leads, allowing them to track vehicles associated with the suspects and connect evidence across jurisdictions. Without this technology, this murder would likely remain unsolved.

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Working with law enforcement partners throughout the Bay Area, detectives identified 24-year-old Alfredo Colmenero-Martinez of Oakland as the driver of the vehicle that struck the victim. Detectives also identified 35-year-old Jarren Frazier of Stockton as the individual responsible for planning and coordinating the attempted robbery. The Sacramento County District Attorney’s Office issued arrest warrants for Colmenero-Martinez for murder and Frazier for attempted robbery and conspiracy.

On August 12, Major Crimes Bureau detectives arrested Colmenero-Martinez in Tracy and Frazier in Concord. Additionally, search warrants were served at four locations with assistance from the Oakland Police Department. Colmenero-Martinez and Frazier were booked into the Sacramento County Main Jail, where both remain ineligible for bail.

Source & photos: Sacramento County Sheriff’s Office