N.J. Stat. § 59:6-7: Escape of person confined; injuries between inmates

Neither a public entity nor a public employee is liable for:

a. an injury caused by an escaping or escaped person who has been confined for mental illness or drug dependence;

b. an injury caused by any person who has been confined for mental illness or drug dependence upon any other person so confined.

L.1972, c. 45, s. 59:6-7.