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PRESS RELEASE: Arrest Made in Murder Investigation

UPDATE: On May 10, 2018, Detectives arrested 54-year-old Theresa Dargan of Long Beach for the April 14th murder of Olympia Riley. Dargan has been charged with one count of murder and is being held on $2,000,000.00 bail. Victim Riley was suspect Dargan’s caregiver at the time of the murder.

On April 14, 2018, at approx. 3:00 a.m., officers were dispatched to an apartment complex in the 1400 block of Walnut Avenue to assist the Long Beach Fire Department with an unresponsive female adult, who was subsequently determined deceased at the scene.

When officers arrived, they observed suspicious circumstances, and it was determined the woman had sustained a stab wound to the lower body. With the assistance of the Los Angeles County Coroner’s Office, detectives began conducting a murder investigation.

The victim has been identified as 51-year-old Olympia Riley of Long Beach.

Anyone with information regarding this this incident is urged to contact Long Beach Police Homicide Detectives Mark Mattia and Don Goodman at (562) 570-7244. Anonymous tips may be submitted through “LA Crime Stoppers” by calling 1-800-222-TIPS (8477), downloading the “P3 Tips” app to your smart phone (available at the Apple App store and Google Play), or visiting


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