All five men arrested in connection with the murder of Catholic police officer Ronan Kerr in Co Tyrone were released last night.

A woman was arrested today by detectives investigating the murder of a policeman who was blown up by dissident republicans earlier this year.

Detectives in the North are continuing to question five men over the murder of policeman Ronan Kerr, who was blown up by dissident republicans earlier this year.

Five men were arrested today by detectives investigating the murder of a policeman who was blown up by dissident republicans in the North earlier this year.

Police investigating the murder of Constable Ronan Kerr in Co. Tyrone three months ago have arrested five men.

A man has been charged over offensive comments allegedly posted on a social networking site about the murder of police officer Ronan Kerr in the North.

Tens of thousands of hours of CCTV footage have been seized by detectives investigating the murder of PSNI Constable Ronan Kerr.

Detectives in the North have been given more time to question a woman who is being detained in connection with the killing of PSNI Constable Ronan Kerr.

A woman was arrested today by police investigating the murder of 25-year-old police officer Ronan Kerr.

The family of murdered PSNI officer Ronan Kerr has called on all sides to back the peace process by voting in tomorrow's elections to the Northern Ireland Assembly.

The North's Deputy First Minister Martin McGuinness says he believes the Real IRA has a limited, but dangerous capability.

Former SDLP leader Mark Durkan has criticised the Real IRA for being "morally and politically bankrupt", after they threatened to kill more PSNI officers in the North.

Sinn Féin President Gerry Adams has said that the group who today claimed responsibility for the murder of PSNI constable Ronan Kerr are not the IRA.

A new dissident republican group made up of former members of the IRA has admitted responsibility for the murder of Ronan Kerr this month.

Police investigating the murder of Constable Ronan Kerr have charged a man with terrorism offences.

Police investigating the murder of PSNI Constable Ronan Kerr tonight charged a man with terrorism offences.

Detectives investigating the murder of PSNI officer Ronan Kerr have searched a house in Co Monaghan.

A 26-year-old man arrested in Scotland by detectives investigating the murder of a policeman in the North has been released without charge.

The North's Policing Board has defended the PSNI over its extended detention of three men arrested in connection with the muder of Constable Ronan Kerr.

The PSNI has rejected criticism from Sinn Féin over the length of the detention of three men arrested over the murder of Constable Ronan Kerr in Omagh.

Sinn Féin is hitting out at the continued detention of three men in connection with the murder of Constable Ronan Kerr in Omagh.

Police in the North have been given almost seven extra days to question a man over the murder of Constable Ronan Kerr.

Sinn Féin President Gerry Adams has said it is time to "stand up and be counted" against what he called "tiny, unrepresentative factions" who continue to engage in armed actions.

Thousands of people marched for peace in Omagh yesterday, one week after the murder of constable Ronan Kerr in the Co Tyrone town.

Police investigating the murder of PSNI officer Ronan Kerr in Omagh have been granted an extra five days to question a man.

Dissident groups attacking the peace process are a threat to the public and must be faced down by politicians, Sinn Féin’s Martin McGuinness has said.

The North's Deputy First Minister Martin McGuinness has described those who murdered Constable Kerr as "enemies of peace".

Large crowds are expected at a 'Walk for Peace' rally in Omagh later to mark the death of PSNI constable Ronan Kerr.

Police in the North have confirmed that a van at the centre of a major security alert close to the border contained a bomb.

Police in the North questioning three men over the murder of constable Ronan Kerr fear further attacks on their officers are being planned.

Detectives investigating the murder of Catholic police officer Ronan Kerr in Omagh have arrested a third man.

Detectives investigating the murder of a Catholic policeman in the North arrested a second man today.

Ireland has been united by its opposition to those who killed Constable Ronan Kerr, Taoiseach Enda Kenny has said.

The head of the Catholic church in Ireland called for an end to the futility and evil of violence in a powerful statement at Pc Ronan Kerr’s funeral today.

Police investigating the murder of Pc Ronan Kerr have arrested a man in Scotland.

Police officers and senior nationalist sporting officials shouldered the coffin of murdered Catholic constable Ronan Kerr at his funeral today in an unprecedented show of unity.

Huge crowds have turned out to pay their last respects to PSNI officer Ronan Kerr who was murdered by dissident republicans in the North at the weekend, and who is being buried this afternoon.

Political leaders and police chiefs from both sides of the Border will be among mourners today at the funeral of Catholic police officer Ronan Kerr, who was murdered by dissident republicans.

An Tánaiste Eamonn Gilmore has encouraged men and women from all sides of the community in the North, to continue to apply to join the PSNI after the murder of young officer Ronan Kerr by car bomb.

The Dáil has heard condemnation of the killing of PSNI officer Ronan Kerr who died in a car bomb attack at the weekend.

The killers of Pc Ronan Kerr have no support in the Gaelic Athletic Association, the chairman of his former club said today.

Sinn Féin pressed ahead with the launch of its Assembly election campaign today, insisting that dissident republicans must not be allowed to hold the political process hostage.

The bomb which killed Constable Ronan Kerr was the size of a lunch box and weighed up to half a kilogramme, police said today.

Residents and their families were today reduced to near tears after a police officer was killed by a car bomb in Omagh.