Penal Code § 1612

1612.

Any person committed to a state hospital or other treatment facility under the provisions of Section 1026, or Chapter 6 (commencing with Section 1367) of Title 10 of this code, or former Section 6316 or 6321 of the Welfare and Institutions Code shall not be released therefrom except as expressly provided in this title or Section 1026.2.