The secretary shall direct the coordination of the investigation of complaints of abuse or neglect made pursuant to this article; and the various agencies of the department, the adult protective services system, the state and regional long-term care ombudsmen, administrators of nursing homes or other residential facilities, county prosecutors and any other applicable state or federal agency shall cooperate among each other for the purposes of observing, reporting, investigating and acting upon complaints of abuse or neglect of any incapacitated adult or facility resident in this state.