The governor's office refused any additional comment after the order was issued late Tuesday afternoon. Administration officials said they were reviewing the court's ruling.
Under a deal struck with lawmakers earlier this month, Brown asked the court for three years to reduce the state's prison population by increasing funding for
Brown's plan also included a fall-back option that involved sending thousands of inmates out of state to ease California's prison overcrowding.
In the two-page order released on Tuesday, the court rejected that option, ordering the state to not send any additional inmates outside of California.