The Santa Barbara County Sheriff's Office reported Friday that three inmates at the main jail have tested positive for COVID-19.
Sheriff's officials say two of the inmates were housed in the general population and the other had been extradited from Arizona and was being held in quarantine.
The inmates are now being medically isolated in negative air pressure cells, according to the sheriff's office, and do not require hospitalization.
Officials say all other inmates housed in the same area have been tested for COVID-19 and test results were negative.
Sheriff's officials say nine additional custody staff members have also tested positive for the virus.
The cases were identified after nine custody deputies and civilian staff tested positive last week and the sheriff's office ordered tests for all staff assigned to the main jail, as well as all inmates.
The sheriff's office says as of noon on Friday, 322 employees and 155 inmates have been tested.