Follow the timeline of attacks - and BBC coverage at the time.
Northern Ireland
15 August 1998: The Omagh Bomb
The worst single atrocity in the Troubles leaves 29 dead and some 300 injured after the Real IRA detonates a massive car bomb in the centre of Omagh town on a busy shopping Saturday.
6 February 2000: Irvinestown, Co Fermanagh
Bomb explodes at Mahon's Hotel in Irvinestown as the Government rushes through legislation, restoring direct rule. Continuity IRA claim responsibility for the attack.
25 February 2000: Ballykelly, Co Londonderry
Bomb placed outside Shackleton military barracks. Minor explosion though no injuries.
Bombers believed to have been disturbed as they assembled the device. Continuity IRA claims responsibility unverified at the time.
29 February 2000: Dungannon, Co Tyrone
Security forces recover a fully-armed rocket launcher and warhead from near to the Killymeal army base.
The Russian-made RPG18 weapon, is the same type as another seized in the Republic in October 1999.
15 March 2000: Hillsborough, Co Down
RUC make arrests after intercepting a vehicle carrying around 500lbs of explosives just eight miles from Belfast.
One of the men arrested is reported by the police to be a former paramilitary prisoner, released under the terms of the Good Friday Agreement.
6 April 2000: Londonderry
Bomb attack on Ebrington Barracks in Londonderry prompts Ulster Unionist leader David Trimble to predict that dissident republicans are building up attacks.
12 April 2000: Rosslea, County Fermanagh
Four families are forced to leave their homes for three days amid a security operation following a failed mortar attack on the Rosslea RUC station.
The device, which contained 10kgs of home-made explosives, was successfully defused by army bomb disposal experts.
24 May 2000: South Armagh
Dissident republicans are blamed for an attempted mortar bomb attack on a fortified south Armagh army observation post.
The device, which failed to explode, landed a short distance of the post at the village of Glassdrumman, near Crossmaglen.
20 June 2000: Hillsborough Castle, Co Down
Northern Ireland Secretary of State Peter Mandelson declares that he feels "very safe and secure" despite the discovery of an explosive device at his official residence.
Army bomb disposal experts defuse the device that was found inside the perimeter fence.
30 June 2000: South Armagh
One of two devices placed on the Belfast-Dublin railway line explodes. The attack came in the middle of the night after a man claiming to be from the IRA ordered 20 people from seven homes to leave the area.
The RUC confirms that it had been expecting dissidents attacks in the area.
9 July 2000: Stewartstown
A car bomb explodes outside the Royal Ulster Constabulary station in Stewartstown, Co Tyrone, the day before the most contentious Protestant Orange Order parade of the marching season at Drumcree.
11 August 2000: Co Donegal, Republic of Ireland
Police say that they have foiled a planned major bomb attack after 500lbs of explosives are recovered following a car chase from near Londonderry into the Irish Republic.
The incident happened on the eve of one of the most important parades of the Protestant marching season.
12 September 2000: Magilligan, Co Londonderry
Two devices are placed at an army training base - with one of them partially exploding as a soldier opened the door to a wooden hut. He escaped uninjured but was treated for shock.
13 September 2000: Armagh City
The RUC describes as a "miracle" that no one is killed in a mortar bomb attack on a police station in the city. Northern Ireland Secretary Peter Mandelson accuses dissidents of attempting to destabilise a peace process that is "strong".
25 September 2000: Dunmurry, Near Belfast
Train services out of Belfast are disrupted after a 50lb device partially explodes on a railway line at Dunmurry. No one claims responsibility.
26 October 2000: Belfast
RUC officers seize explosives in west Belfast - though the nature of the find is unclear. They link the find to dissident republicans but make no other comment.
A later, unsourced, report in a Sunday newspaper suggests that a large device was bound for London.
11 November 2000: Derrylin, Co Fermanagh
Three men are arrested after a "barrack buster" mortar bomb containing an estimated 100kilos of home-made explosives is found in a van intercepted by police.
17 January 2001: Armagh
Police defuse a 1,100lb landmine-style bomb near Armagh which they believe was designed to kill members of the security forces.
The bomb, which had been packed into two rubbish bins, came at a time when mainstream republicans are demanding demilitarisation of the south Armagh area as part of the peace process.
23 January 2001: Londonderry
Dissident republican paramilitaries are blamed for a mortar bomb attack on a British Army base in Londonderry.
The RUC said that it was luck that prevented lives being lost when the "barrack buster" device was fired at the
Ebrington Barracks but failed to explode.
13 February, 2001: Irish Republic
Gardai in the Republic of Ireland discover a mark-15 type mortar near Newtowncunningham, several miles from the border with Northern Ireland.
The device which did not contain any explosives was similar to one which had been fired at an army base last month.
12 April 2001: County Tyrone
Army bomb disposal officers launch a three-day operation to make safe a fully-armed "barrack buster" mortar bomb packed with 90kg of high explosives.
Police found the device in an abandoned van in Altmore Forest, County Tyrone, and immediately linked it to dissident republicans.
1 August 2001: Belfast International Airport
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Police say the Real IRA was responsible for 20kg of home-made explosives discovered at Belfast International Airport
According to the police, the warning given by someone claiming to be from the Real IRA was very vague and an initial search of the airport proved fruitless.
Two controlled explosions were carried out on the suspect vehicle by army technical experts.
17 October 2001: County Tyrone
Security forces link dissident republican paramilitaries to the discovery of a primed bomb in County Tyrone.
The bomb, containing 350lbs of home-made explosives in a creamery can, was discovered in a stone shed connected to a house in Glenaness Road near Sixmilecross.
30 October 2001: West Belfast
Dissident republican paramilitaries are believed to have detonated a bomb on a hijacked bus outside a west Belfast police station.
The device, containing an estimated 5kg of explosives, went off on the bus on Stewartstown Road near the gates of the Woodbourne base, as army experts tried to defuse it.
There were no injuries, and damage was restricted to the gates and the bus.
20 November 2001: County Down
Dissident republicans are blamed for an incendiary device which partially exploded in a shop in County Down.
The police said a cassette-type device, similar to that used by republicans in the past, was discovered in a sports shop in Hill Street in Newry.
The device was smouldering in a pocket of the jacket, but had burnt itself out.
5 December 2001: County Armagh
The Army defuses a bomb containing 35kg of home-made explosives which was found under a railway line at the Irish border.
The device was discovered at Killeen Bridge in County Armagh, following a six day security alert in the area.
19 December 2001: County Fermanagh
A dissident republican paramilitary group has admitted that it carried out a bomb attack which damaged a Fermanagh Customs and Excise office.
In a statement to a newspaper, the Continuity IRA said it was responsible for detonating a device at the customs office on the Killyhevlin Industrial Estate.
The office was not staffed at the time and no-one was injured.
4 January 2002: County Down
The police say they believe dissident republicans are responsible for a pipe bomb attack on a police officer's home in Annalong, County Down.
It was the second time the officer's home had been attacked.
The policeman, who has lived in the south Down area all his life, found the crude bomb under a shovel in a shed at the back of his house.
3 March 2002: County Armagh
Dissident republicans are blamed for a small explosion which has slightly injured two boys in County Armagh.
The boys, aged 15 and 16, suffered slight shrapnel wounds and burns.
The blast happened when a police cone containing a device was moved at Farmacaffley point-to-point races in Armagh. Police officers were the most likely intended target, according to security sources.
29 March 2002: County Tyrone
Police say an attack in County Tyrone in which a booby trap bomb was discovered under a car was attempted murder.
Dissident republicans were blamed for leaving the semtex device in Sion Mills, which was fitted with a mercury tilt switch.
The man targeted by the bombers was a former member of the Royal Irish Regiment.
13 April 2002: County Down
Dissident republicans are blamed for two bomb attacks on police stations in County Down.
No-one was was injured in the blasts but police have condemned the acts as reckless and dangerous.
Homes near the stations in Downpatrick and Ardglass were evacuated. A police source said improvised devices were used in both attacks.
19 April 2002: East Belfast
The dissident republican group, the Continuity IRA, admits the bomb attack on a police training college in Belfast.
In a statement, the group claimed the new police service was still the RUC under a different guise.
The bomb attack damaged gates and fencing at the Garnerville complex in the east of the city.
26 April 2002: Belfast city centre
Republican dissidents are thought to have been behind an attempt to drive a large firebomb into the centre of Belfast.
Two controlled explosions were carried out on a van containing the petrol and explosive device which was abandoned as it approached the city centre.
29 April 2002: County Antrim
Dissident republicans are blamed by the police for a bomb attack on Northern Ireland's main prison.
A 150lb home-made device only partially exploded at the main gate of Maghaberry Prison in County Antrim.
The device was left in a white vehicle which pulled up outside the perimeter gate to the prison. No-one was injured.
17 July 2002: County Down
The dissident republican group, the Real IRA, says it was behind an attack in which an explosive device was fired at a police car in County Down.
The officers escaped injury after the projectile bounced off their car without exploding on the Killough Road near Downpatrick.
The police said it was detonated by a command wire.
1 August 2002: Londonderry
The death of a man in an explosion at a Territorial Army base on the outskirts of Londonderry is blamed on the dissident republican Real IRA.
The incident happened at 0720 BST on 1 August at the camp on the Limavady Road in the city.
David Caldwell, a 51-year-old civilian contractor, was taken to Altnagelvin Hospital in Londonderry where he died a short time later.
Attacks in England
1 June 2000: Hammersmith
Dissident republicans are blamed for a device exploded under Hammersmith Bridge in west London, a previous IRA target. No one is damaged but the bridge is substantially damaged.
19 July 2000: The Underground
Bomb disposal experts carry out two controlled explosions on a bomb and a suspect package on a London Underground line in central London.
The alert caused major transport disruption to London with two of the capital's main train stations, Victoria and Paddington, are closed.
20 September 2000: MI6
Dissident republicans launch a rocket propelled grenade attack on the headquarters of MI6 in Vauxhall Cross, south London. The attack shocks the capital, prompting fears that there could be more to come.
4 March 2001: BBC Televison Centre
A red taxi is parked outside of the BBC's News Centre, the main entrance to Television Centre in west London.
Warnings are given but the device explodes as bomb disposal squads are attempting to defuse it. There is one minor injury but substantial damage to the BBC premises.
14 April 2001: Hendon, North London
Dissident republicans bomb a London postal sorting office. The attack came without warning but there were no injuries.
6 May 2001: Hendon, North London
A half-pound device is left in exactly the same spot as the Hendon blast three weeks earlier, prompting anti-terrorist chiefs to issue warnings of a general election bombing campaign.
2 August 2001: Ealing, West London
A car bomb explodes in Ealing Broadway, an area busy with pub and restaurant goers. A warning was received but a number of people are injured.
3 November 2001: Birmingham city centre
An explosion in a car in Birmingham city centre causes minor injuries to police at the scene. Police suspect a dissident Irish republican group is behind the attack.
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