Section 628 of the Welfare and Institutions Code specifies certain provisions under which youth may be detained.

1. The youth is in need of proper, effective, parental care or control and has no actual or willing parent, guardian or responsible relative to exercise, or who is capable of exercising, such care or control.
2. The youth is destitute or is not provided with the necessities of life or is not provided with a home or suitable place to abide.
3. The youth’s home is unfit for him/her due to neglect, cruelty, depravity or physical abuse by his/her parent, guardian or other person responsible for his/her custody.
4. Continued detention of the youth is a matter of immediate and urgent necessity for the protection of the youth or a reasonable necessity to protect the person or property of another.
5. The youth is likely to flee the jurisdiction of the Court.
6. The youth has violated an order of the Juvenile Court.
7. The youth is physically dangerous to the public because of mental or physical deficiency, disorder or abnormality.