State officials confirmed on Wednesday Masterson has been admitted to North Kern State Prison in Delano. He will initially go through the inmate and reception process, which determines the level of security where he will be held.
A new prison mugshot was also released of the "That '70s Show" actor.
Masterson was accused of raping three women but convicted of two felony counts of forcible rape in late May and sentenced to 30 years to life in prison in September. He is appealing his conviction.
Danny Masterson found guilty of two counts of rape in Los Angeles retrial
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