A Buncrana father-of-four who put a young man in a headlock and threatened him with a knife in a frightening and unprovoked attack has been jailed for four months. She said Mr McMenamin had put his victim in fear for his life. The injured party alleged that the male, who was holding a knife and highly intoxicated, had put his arm around him. Mr McMenamin has previously been given a number of suspended prison terms, as well as sentences of community service. She said the injured party had been put in fear for his life during the unprovoked attack at night.