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SBSD - Victor Valley Sheriff's Department
Tuesday November 28th, 2017 :: 12:05 p.m. PST


Mark Fuller of Spring Valley Lake arrested for the murder of his stepfather, Victor Rosales.

DATE/TIME: Monday, November 27, 2017 10:06 a.m.

INCIDENT: Murder Investigation

LOCATION: 12600 block of Cedar Lane, Spring Valley Lake

VICTIM: Victor Rosales, 66 years old, resident of Spring Valley Lake

SUSPECT: Mark Fuller, 39 years old, resident of Spring Valley Lake

On Monday, November 27, 2017 at 10:06 a.m. deputies responded to the Cedar Lane home following a report from a neighbor that the homeowner had been assaulted. Deputies arrived and found the victim suffering from obvious upper body trauma. The victim was transported to a local hospital where he was pronounced dead at 11:03 a.m.

Sheriff’s Homicide Investigators responded to conduct the investigation. Investigators determined that the victim’s step-son, identified as Mark Fuller, was likely the last person he had contact with and they began searching for Fuller. Late Monday afternoon, Investigators located Fuller near Deep Creek and took him into custody without incident.

An autopsy will be conducted to determine the exact cause of death. Details regarding the motive are not being released at this time.

Mark Fuller was booked for Murder at High Desert Detention Center and is being held without bail.

Anyone with information regarding this investigation is urged to contact the Homicide Detail, Detective Chuck Phillips at (909)387-3589. Callers wishing to remain anonymous are urged to call the We-tip Hotline at 1-800-78-CRIME (27463) or you may leave information on the We-Tip Hotline at

Refer: Detective Chuck Phillips or Sergeant John Gaffney

Station: Specialized Investigations Division – Homicide Detail

Phone No. (909)387-3589

Case No. 071703775 H#2017-114

John McMahon, Sheriff-Coroner
San Bernardino County Sheriff-Coroner Department

SBSD - Victor Valley Sheriff's Department
11613 Bartlett Ave
Adelanto, CA 92301

Emergency: 9-1-1

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