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Detectives with the California Highway Patrol made an arrest Tuesday in the 2021 murder of a woman in Ventura.  

In September 2021, CHP officers responded to an area near the Olive Street on-ramp to northbound State Route 33 on reports of a deceased female  

First responders discovered body of Kelsey Ann Dillon, 32, of Thousand Oaks.

Dillon was pronounced dead at the scene. Her death was determined to be a homicide, prompting an investigation, according to a CHP news release. 

The year-long investigation led to the arrest of 40-year-old Sandra Dillard, who was booked into the Ventura County Jail on a charge of murder.  

Authorities did not reveal a motive for the killing.  

Anyone with information about the incident was urged to contact the CHP Ventura Area office at 805-477-4174.