IA-5

Internal Affairs, Unit 5 (IA-5) is one of three official professional standards units of the Lower Mainland Constabulary (LMC), the territorial police force responsible for the seven counties of the Metro Vancouver and surrounding Lower Mainland regions. IA-5 is the second-largest of the three operational units of the constabulary's Directorate of Internal Affairs, after IA-9, and while fully empowered to investigate alleged professional misconduct and corruption within all areas of the constabulary, it is primarily responsible for operating the constabulary's Witness Protection & Relocation Program.

IA-5 has its offices at Port Moody Station in Port Moody, Coquitlam County. The current commanding officer of AC-3 is Chief Superintendent Alice Athan.