(

a) The court may retain jurisdiction over a person who is found to be a ward or dependent child of the juvenile court until the ward or dependent child attains years of age, except as provided in subdivisions (b), (c), (d), (e), and (f). (

b) The court may retain jurisdiction over a person who is found to be a person described in

Section by reason of the commission of an offense listed in subdivision (

b) of

Section 707, until that person attains years of age, or two years from the date of commitment to a secure youth treatment facility pursuant to

Section 875, whichever occurs later, subject to the provisions of subdivision (c). (

c) The court may retain jurisdiction over a person who is found to be a person described in

Section by reason of the commission of an offense listed in subdivision (

b) of

Section until that person attains years of age, or two years from the date of commitment to a secure youth treatment facility pursuant to

Section 875, whichever occurs later, if the person, at the time of adjudication of a crime or crimes, would, in criminal court, have faced an aggregate sentence of seven years or more. (

d) The court may retain jurisdiction over a person who is years of age or older for a period not to exceed two years from the date of disposition if the person is found to be a person described in

Section by reason of the commission of an offense listed in subdivision (

b) of

Section 707. The court shall exercise jurisdiction in conformance with the objectives of the juvenile court. (

e) The court shall not discharge a person from its jurisdiction who has been committed to the Department of Corrections and Rehabilitation, Division of Juvenile Justice while the person remains under the jurisdiction of the Department of Corrections and Rehabilitation, Division of Juvenile Justice, including periods of extended control ordered pursuant to

Section 1800. (

f) The court may retain jurisdiction over a person described in

Section by reason of the commission of an offense listed in subdivision (

b) of

Section 707, who has been confined in a state hospital or other appropriate public or private mental health facility pursuant to

Section 702.3 until that person attains years of age, unless the court that committed the person finds, after notice and hearing, that the person’s sanity has been restored. (

g) The court may retain jurisdiction over a person while that person is the subject of a warrant for arrest issued pursuant to

Section 663. (

h) Notwithstanding subdivisions (b), (c), and (f), a person who is committed by the juvenile court to the Department of Corrections and Rehabilitation, Division of Juvenile Justice on or after July 1, 2012, but before July 1, 2018, and who is found to be a person described in

Section by reason of the commission of an offense listed in subdivision (

b) of

Section shall be discharged upon the expiration of a two-year period of control, or when the person attains years of age, whichever occurs later, unless an order for further detention has been made by the committing court pursuant to

Article 6 (commencing with

Section 1800) of

Chapter of Division 2.5. This subdivision does not apply to a person who is committed to the Department of Corrections and Rehabilitation, Division of Juvenile Justice, or to a person who is confined in a state hospital or other appropriate public or private mental health facility, by a court prior to July 1, 2012, pursuant to subdivisions (b), (c), and (f). (i)

(1) Notwithstanding subdivision (h), a person who is committed by the juvenile court to the Department of Corrections and Rehabilitation, Division of Juvenile Justice, on or after July 1, 2018, and who is found to be a person described in

Section by reason of the commission of an offense listed in subdivision (

c) of

Section 290.008 of the Penal Code or subdivision (

b) of

Section of this code, shall be discharged upon the expiration of a two-year period of control, or when the person attains years of age, whichever occurs later, unless an order for further detention has been made by the committing court pursuant to

Article 6 (commencing with

Section 1800) of

Chapter of Division 2.5.

(2) A person who, at the time of adjudication of a crime or crimes, would, in criminal court, have faced an aggregate sentence of seven years or more, shall be discharged upon the expiration of a two-year period of control, or when the person attains years of age, whichever occurs later, unless an order for further detention has been made by the committing court pursuant to

Article 6 (commencing with

Section 1800) of

Chapter of Division 2.5.

(3) This subdivision does not apply to a person who is committed to the Department of Corrections and Rehabilitation, Division of Juvenile Justice, or to a person who is confined in a state hospital or other appropriate public or private mental health facility, by a court prior to July 1, 2018, as described in subdivision (h). (

j) The amendments to this

section made by

Chapter of the Statutes of apply retroactively. (

k) This

section does not change the period of the juvenile court jurisdiction for a person committed to the Division of Juvenile Justice prior to July 1, 2018. (

l) This

section shall become operative July 1, 2021. (

m) The amendments to this

section made by the act that added this subdivision apply retroactively.