The move comes from a probe into whether Dale ordered officers to pull over a county bus and arrest a witness in October.
The District Attorney investigated and found no evidence of criminality.
" The investigation itself indicates a fresh look at internal procedures is warranted," Mangano said. "This approach is necessary to maintain the highest standards of police internal administration. New leadership sends a clear message that stringent administrative review and application is underway."
Mangano appointed Deputy County Executive for Public Safety Victor Politi to serve as Acting Police Commissioner during the transition.
