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"): Also known internationally as the Northern Ireland conflict, it is sometimes described as a "guerrilla war" or a "low-level war".
Relevant evidence: No