He appeared to be a friend and known contact of Artie Lynch, and helped him release a convict on HR's payroll from custody. (“Wolf and Cub”)
He is later revealed to be incarcerated with other corrupt HR cops. (“C.O.D.”)
However, he somehow beats the charges and is still running the Homicide Task Force as he is briefly seen when Fusco reclaims his weapon and badge after Stills' body goes missing. (“In Extremis”)
It is assumed that he was arrested with the rest of the corrupt cops after Det. Carter successfully brought down HR. The 8th Precinct is seen having a new superior, Captain Devecchio. (“Root Path (/)”)