The Suffolk County Police Department reported 2,126 allegations originating from civilian complaints between January 2012 and May 2015, equivalent to one allegation per four officers annually. Seven percent of complaints were substantiated.
The department also reported 208 administrative investigations, of which 122 (59%) were sustained. Of the 12 investigations into excessive force, only one was sustained. It is unclear whether or how these investigations overlap with complaint data provided by the department.
The policy documents we received from the department are linked below.