May
- 31 May - F District Four Arrested Over Burglary Offences Omagh
- 31 May - PSNI MURDER APPEAL ON BBC CRIMEWATCH
- 30 May - Two men charged with terrorist offences
- 30 May - PSNI/AGS operation into organised prostitution - update
- 30 May - PSNI/AGS operation into organised prostitution
- 28 May - D DISTRICT – Hijacking, Woodburn Road, Carrickfergus
- 28 May - Police appeal for information of CCTV images - Belfast
- 26 May - H DISTRICT, Ballymena – Man charged with drugs offences
- 25 May - Motorcyclists urged to Bikesafe
- 25 May - B DISTRICT – Drugs seizure, Trossachs Drive, Belfast
- 23 May - Man charged with murder of Thomas Lockard April 1998
- 21 May - Human Tissue Audit
- 21 May - Police operation against dissident republicans
- 16 May - DAMIEN DUFFY MURDER 2001 - POLICE RE-OPEN INVESTIGATION
- 15 May - NW200 Traffic and Travel advice
- 15 May - NW200 2012
- 09 May - H DISTRICT – Death of Owen McKeown, River Bann, Kilrea
- 09 May - Murder of Simon Tang, Carrickfergus 24 June 1996 arrests 9/5/12
- 06 May - A DISTRICT Aggravated Burglary Corrib Avenue Belfast 06/05/12
- 06 May - D DISTRICT Burglary and Assault Doagh Road Newtownabbey 05/05/12
- 06 May - F DISTRICT Drugs seizure Garrison
- 06 May - B DISTRICT Distraction Burglary Posnett Court Belfast
- 04 May - C DISTRICT - Cannabis Factory, Quay Street, Ardglass
- 04 May - D DISTRICT - Armed robbery and arrest, Longstone Street, Lisburn
- 03 May - Bertie Acheson Murder - Crimestoppers £10,000 Reward For Information
- 01 May - C District – Assault Rathgael Road Bangor
- 01 May - H DISTRICT: Murder – updated appeal, Glenmore Gardens, Coleraine
