The value to the Garda of mining data one even one phone in an inquiry is significant. Photograph: Brent Lewin/Bloomberg

When it emerged in the early 1980s that journalists’ phones had been tapped, a fierce political and policing storm ensued. A month after the news brok(...)

Garda Commissioner Noirin O’Sullivan. Photograph: Alan Betson / The Irish Times

Journalists’ text messages and call-details have been accessed from the mobile phone of a Garda officer who is under investigation on suspicion of lea(...)

Minister for Justice Frances Fitzgerald, Taoiseach Enda Kenny and  Commissioner Noirín O’Sullivan at  graduation ceremony at the Garda College Templemore on Thursday. Photograph: Brenda Fitzsimons

Garda Commissioner Noirín O’Sullivan has defended her decision to assign her superintendent husband to a criminal investigation into contacts between (...)

Garda Commissioner Nóirín O’Sullivan has warned that terrorist attacks such as the massacre in Tunisia last month, in which three Irish people died, can happen “anywhere, at any time” .  Photograph: Brenda Fitzsimons/The Irish Times.

Garda Commissioner Nóirín O’Sullivan has warned that terrorist attacks such as the massacre in Tunisia last month, in which three Irish people died, c(...)

John Deasy TD (left) with Kevin Giblin, Executive Manager at Mercyhurst College Ireland  and Garda Commissioner Noirín O’Sullivan, pictured in a surveillance vehicle at An Garda Siochanan Headquarters at the launch of the Global Intelligence Forum.

Intelligence officers, former US Secret Service agents, cybercrime experts and members of international police forces will convene in Co Waterford thi(...)

Gardaí outside Leinster House. File  photograph: Gareth Chaney/Collins

Leinster House is under potential threat from “fixated loners”, gardaí have warned TDs. Amid heightened security concerns consideration is being given(...)

Garda Commissioner Nóirín O’Sullivan: had 40-minute private meeting with  the Committee on Procedure and Privileges  Photograph: Dara Mac Donaill/The Irish Times

Garda Commissioner Nóirín O’Sullivan has promised a full review into events outside Leinster House this week. Ms O’Sullivan met the Committee on Pro(...)

In 12 of the 14 crime categories (with homicides and kidnapping and related offences being the exceptions), the CSO determined the force was under-reporting crime by an average of 18 per cent.   File photograph: Alan Betson/The Irish Times

This week, after a six-month delay, the Central Statistics Office (CSO) published crime statistics for the last half of 2014 (as well as the scheduled(...)

Gardai surround former minister for justice Alan Shatter’s car which was blocked from entering the gates of Leinster House by protesters on Wednesday. Photograph: Dara Mac Dónaill/The Irish Times

Garda Commissioner Noirin O’Sullivan has promised a review into events outside Leinster House this week in which one female garda was injured an a (...)

The anti-water charges protest outside the Dáil on Wednesday. Garda Commissioner Noirin O’Sullivan is to appear before an Oireachtas committee on Friday morning to discuss the policing of the demonstration.  Photograph: Dave Meehan.

Garda Commissioner Noirin O’Sullivan is to appear before an Oireachtas committee on Friday morning to answer questions about policing outside Leinster(...)