Question: Blast bomb, is a term used in Northern Ireland, for a type of improvised explosive device, a police officer was killed by a blast bomb in Northern Ireland during which ethno-nationalist conflict in Northern Ireland during the late 20th century, by loyalists?
Sentence (from "The Troubles"): Although the Troubles mainly took place in Northern Ireland, at times the violence spilled over into parts of the Republic of Ireland, England and mainland Europe.
Relevant evidence: No