New Jersey Statutes Title 2A. Administration of Civil and Criminal Justice 2A § 4A-80

a. The officer has reason to believe that it is not in the best interests of the juvenile or the family for the officer to return the juvenile to his home;

b. The juvenile resides in another county and the officer is unable to make arrangements to return the juvenile to his home;

c. The juvenile resides in another state;

d. The juvenile has run away from a placement and the juvenile refuses to return home or the juvenile, through his past behavior, has demonstrated an inability to remain at home;

e. The law enforcement officer is unable, by all reasonable efforts to identify or locate a parent, relative or other such appropriate person;

f. The juvenile requires immediate emergency services, such as medical or psychiatric care; or

g. No identification can be obtained from the juvenile.