RCW 70.124.050: Investigations required—Seeking restraining orders authorized.

Upon the receipt of a report concerning the possible occurrence of abuse or neglect, it is the duty of the law enforcement agency and the department to commence an investigation within twenty-four hours of such receipt and, where appropriate, submit a report to the appropriate prosecuting attorney. The local prosecutor may seek a restraining order to prohibit continued patient abuse. In all cases investigated by the department a report to the complainant shall be made by the department.