Latest: Terrorism link probed after man killed and two injured in 'random and unprovoked' Dundalk attacks

Latest: Detectives investigating the murder of a Japanese man during a series of random attacks in Dundalk, Co Louth have said terrorism is one line of inquiry.

Update 4pm: Detectives investigating the murder of a Japanese man during a series of random attacks in Dundalk, Co Louth have said terrorism is one line of inquiry.

An 18-year-old Egyptian man has been arrested on suspicion of the knife murder and subsequent assaults on two local men - one with a knife and one with a fence pole.