The search is on for two prisoners missing from a minimum security prison facility in northern Santa Barbara County.
The head count on Saturday night of 465 inmates showed two inmates missing.
Both were serving time in the Lompoc facility for drug-related offenses.
Two other inmates had simply walked away from the minimum security section of that prison earlier this year, one in September, the other in November.
The FBI, US Marshal Service, and local officials have been notified. The men are not considered dangerous or violent offenders.