May
- 01 Jun - Find of hoax devices Belfast City Cemetery
- 31 May - Criminal Damage Lough Road Antrim
- 28 May - Re-appeal Bobby Moffett Murder Shankill Road
- 27 May - Joint op involving the Federation Against Copyright Theft - Derry 26/05/11
- 27 May - PSNI appeal for community vigilance
- 27 May - Dissident arrests Greater Belfast
- 27 May - RE-APPEAL RICHARD HICKING MURDER EAST BELFAST
- 25 May - Ronan Kerr Murder - police appeal for photographic material
- 25 May - Murder of Anne Marie O'Kane - UPDATE
- 25 May - Police urge homeowners to secure their property
- 23 May - MURDER, Anne Marie O'Kane, Antrim Road, North Belfast
- 23 May - Rosemary Nelson Inquiry: Press Statement by Chief Constable Matt Baggott
- 23 May - New H District Commander appointed
- 23 May - Fatal collision - Mallusk Road, Mallusk
- 23 May - Theft - Northwest 200, Portrush
- 23 May - Fatal collision - Main Road, Magherafelt
- 23 May - Explosion - The Diamond, Derry
- 20 May - Missing person Victoria Mather, Dungannon
- 20 May - Attempted Paramilitary assault, Havana Way, North Belfast
- 20 May - Arson Leckagh Drive Magherafelt
- 19 May - Police in Armagh launch Metal Waste and Scrap Business Text Alert Initiative
- 19 May - Drugs seized Bernish Road Bessbrook
- 17 May - Bus Hijacking, Glengalliagh Road, Derry
- 16 May - Aggravated Burglary Macosquin
- 16 May - Fatal scrambler bike collision Mountcoole Park North Belfast
- 16 May - Armed Robbery, Antrim Road, Belfast
- 16 May - Racist assault, Florenceville Drive, Belfast
- 16 May - Terrorism charges
- 15 May - NW200 – A safe weekend starts with you
- 16 May - Stabbing Glasgow Street North Belfast
- 13 May - Murder Hazelbrook Avenue Bangor County Down
- 13 May - North West 200 traffic and travel information
- 12 May - Foyle City North NPT tackle quad misuse
- 12 May - Annual Crime Figures Released
- 11 May - Balmoral Show parking arrangements
- 10 May - Travelling to the NW200 – do it safely
- 10 May - Robberies and arrests, Lisburn Road, South Belfast
- 09 May - Police appeal following sudden death Ferris Bay Road Ballylumford
- 09 May - Assault and stabbing - Suffolk Road, West Belfast
- 09 May - Petrol bomb attack, Corban Avenue, Enniskillen
- 09 May - Serious sexual assault charges
- 09 May - Armed hijacking, Cortamlat Road, Newry
- 09 May - Police revisit scene of Kilkeel murder 07/05/11
- 07 May - Man charged for murder of Richard Hicking
- 06 May - Fire officer injured Aileach road Derry
- 06 May - Organised crime operation Mallusk charges
- 06 May - Hijacking, Blacks Road, Dunmurry
- 05 May - West Belfast armed robbery
- 04 May - Search and rescue operation fires Cushendun
- 09 May - Further charges Kilkeel murder 04/05/11
- 03 May - Items seized in anti-dissident operation
- 03 May - Stabbing and arrest - Union Place Dungannon
- 03 May - Investigation into deliberate ignition Gorse Fires
- 03 May - Advice on public safety regarding the Gorse Fires
- 03 May - Further charges in Kilkeel murder
- 03 May - Fatal stabbing Clarawood Park East Belfast
