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A Lompoc man suspected of killing another man in the Santa Ynez riverbed was shot and killed Sunday by Lompoc Police officers after they arrived at the scene and the suspect reportedly fired a gun at officers, according to the Santa Barbara County Sheriff's Office.

Sheriff's officials on Monday released the names of both the homicide victim and the suspect who died following the officer-involved shooting.

The homicide victim is Timothy Ross Culley, 28, of Lompoc. 

The man suspected of killing him, who died following the shootout with police, is Geronimo Vicente Santos, 34, of Lompoc. He had several aliases, according to sheriff's officials, but had been living the past several years under the false identity of Carlos Aguirrez-Justo, 32. 

Next of kin for both decedents have been notified. 

The Sheriff’s Office will complete the officer-involved shooting investigation, and the Lompoc Police Department is handling the homicide investigation. 

The Sheriff's Office received a call for backup at 7:30 a.m. Sunday from the Lompoc Police Department regarding the officer-involved shooting, which occurred in the 700 block of North “A” Street.

Witnesses provided Lompoc first responders with a description of the homicide suspect, and a Lompoc Fire Department employee saw a man matching the description and advised Lompoc Police Department personnel who were in the area. Several Lompoc patrol units responded and contacted Santos, who refused to comply with their orders.

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Santos then reportedly turned toward officers, raised his hand and discharged a firearm directly at them. The Lompoc officers returned fire, striking him multiple times.

Lompoc officers began lifesaving measures until paramedics arrived. Santos was transported by an American Medical Response ambulance to a local hospital, where he died of his injuries.

Sheriff’s Office personnel contacted and interviewed several neighborhood residents, as well as processed the extensive crime scene. Santos' weapon was recovered at the scene.

Anyone with additional information or who witnessed the incident is encouraged to contact the Sheriff’s Criminal Investigations Bureau at 934-6170. To leave an anonymous tip, call 681-4171 or visit