Blast bomb is a term used in Northern Ireland

Northern Ireland

Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

 for a type of improvised explosive device

Improvised explosive device

An improvised explosive device , also known as a roadside bomb, is a homemade bomb constructed and deployed in ways other than in conventional military action...

. More specifically, these devices are usually a form of homemade grenade

Grenade

A grenade is a small explosive device that is projected a safe distance away by its user. Soldiers called grenadiers specialize in the use of grenades. The term hand grenade refers any grenade designed to be hand thrown. Grenade Launchers are firearms designed to fire explosive projectile grenades...

, which is thrown at a target. These devices have been used in a number of public order situations, and in attacks on the Royal Ulster Constabulary

Royal Ulster Constabulary

The Royal Ulster Constabulary was the name of the police force in Northern Ireland from 1922 to 2000. Following the awarding of the George Cross in 2000, it was subsequently known as the Royal Ulster Constabulary GC. It was founded on 1 June 1922 out of the Royal Irish Constabulary...

, its successor Police Service of Northern Ireland

Police Service of Northern Ireland

The Police Service of Northern Ireland is the police force that serves Northern Ireland. It is the successor to the Royal Ulster Constabulary which, in turn, was the successor to the Royal Irish Constabulary in Northern Ireland....

 (PSNI) and British Army

British Army

The British Army is the land warfare branch of Her Majesty's Armed Forces in the United Kingdom. It came into being with the unification of the Kingdom of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England...

. A police officer was killed by a blast bomb in Northern Ireland during The Troubles

The Troubles

The Troubles was a period of ethno-political conflict in Northern Ireland which spilled over at various times into England, the Republic of Ireland, and mainland Europe. The duration of the Troubles is conventionally dated from the late 1960s and considered by many to have ended with the Belfast...

 by loyalists

Ulster loyalism

Ulster loyalism is an ideology that is opposed to a united Ireland. It can mean either support for upholding Northern Ireland's status as a constituent part of the United Kingdom , support for Northern Ireland independence, or support for loyalist paramilitaries...

 and in 2001 Loyalist protesters threw a blast bomb at Catholic schoolgirls

Holy Cross dispute

The Holy Cross dispute occurred in 2001 and 2002 in the Ardoyne area of Belfast, Northern Ireland, and involved an escalating dispute between on the one hand the pupils and parents of Holy Cross R.C. Primary School and on the other the residents of a loyalist area that lay on the route to the front...

, some as young as 4 years old, making their way to school in September 2001. Ordinary fireworks are sometimes used in a similar fashion to blast bombs. Such devices which are packed with nails are referred to as nail bomb

Nail bomb

The nail bomb is an anti-personnel explosive device packed with nails to increase its wounding ability. The nails act as shrapnel, leading almost certainly to greater loss of life and injury in inhabited areas than the explosives alone would. The nail bomb is also a type of flechette weapon...

s.

A similar type of device, also common in Northern Ireland, is the pipe bomb

Pipe bomb

A pipe bomb is an improvised explosive device, a tightly sealed section of pipe filled with an explosive material. The containment provided by the pipe means that simple low explosives can be used to produce a relatively large explosion, and the fragmentation of the pipe itself creates potentially...

.