One of the two men, Darragh Manning (25), from Clyde Hill Mews, St Alphonsus Street, Limerick, filmed the savage attack, in which he was armed with a sword.

The 40-year-old was detained following the incident which lasted for several hours in Kilkeel.

Jurors at the Central Criminal Court in Cork took just over four hours to unanimously convict Dylan Scannell

A suspect aged in his 30s has been arrested on suspicion of attempted murder following the incident in Co Down.

A gun collection valued at more than £1 million includes duelling pistols, carbines and revolvers.