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SBSD - Headquarters
Thursday January 13th, 2022 :: 08:33 a.m. PST


Homicide Investigators Re-Open 1993 Cold Case; Diana Cook Arrested for the Murder of Rick Hafty

DATE/TIME:  Wednesday, January 12, 2022

INCIDENT: PC 187 – Update - Cold Case Homicide Investigation
LOCATION: 2400 Block of Bernard, Twin Peaks

SUSPECT: Diane Cook, 70 years old, Resident of Twin Peaks

VICTIM: Rick Hafty, 35 years old (at time of death), Resident of Twin Peaks

SUMMARY: On Saturday, February 27, 1993, Twin Peaks Station deputies responded to a call for service at a residence for a male subject who was shot. The gunshot victim was identified as Rick Hafty. Hafty was transported to San Bernardino Medical Center and was pronounced deceased from the gunshot wound. Homicide investigators responded to the location and conducted an investigation. At the time, investigators exhausted all leads and the case remained open. 

In June 2021, investigators from the Sheriff’s Cold Case Homicide Team re-examined the case and reopened the investigation. Since June 2021, investigators conducted numerous interviews and re-examined all the physical evidence related to the investigation. Investigators identified Diane Cook of Twin Peaks as a suspect in the murder of Hafty. On Wednesday, January 12, 2022, investigators arrested Cook for the murder of Hafty and booked her into the Central Detention Center for PC 187-Murder. Bail was set at $1,000,000.00. 

The San Bernardino County Sheriff’s Department has a specialized team of investigators dedicated to investigating homicide cases where all leads have been exhausted and the case has grown cold. The team is comprised of Sheriff’s Detectives Eric Ogaz, Art Alvarado, District Attorney Investigator Jesse Moon, Fontana Police Detective Katie Clark, Deputy District Attorney Lloyd Masson, and Sergeant Justin Giles. 

Anyone with information regarding this investigation is urged to contact Detective Eric Ogaz or Sergeant Justin Giles at (909) 387-3589. Callers wishing to remain anonymous are urged to call We-Tip Hotline at 1-800-78CRIME (27463) or may leave the information on the We-Tip website at 

Refer: Detective Eric Ogaz or Sergeant Justin Giles

Station: Specialized Investigation Division-Homicide Detail

Case #: 059300635

Phone No. (909) 387-3589

Shannon D. Dicus, Sheriff-Coroner
San Bernardino County Sheriff-Coroner Department

SBSD - Headquarters
655 E 3rd St
San Bernardino, CA 92408

Emergency: 9-1-1
Non-emergencies: 909-387-3700

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