Fullerton police say 52-year-old April Baughman has been stealing cash from the department's property room for the past two years.
She was arrested while at work on Thursday after one of her co-workers discovered a discrepancy in cash at the office and alerted supervisors.
Baughman, who has worked at the department for 22 years, was taken to Orange County Jail where she was booked.
City News Service contributed to this report.
