Veronica Guerin (5 July 1958 – 26 June 1996) was an Irish investigative journalist who reported on organised crime in Ireland for the Sunday Independent from 1994 onward. Using her accountancy background to trace proceeds of crime, she used street names or pseudonyms for underworld figures to avoid Irish libel laws. Her reporting brought her into direct contact with major organised crime figures, including convicted drugs criminal John Traynor and his associate John Gilligan.
Guerin faced escalating violence in connection with her work. In October 1994, shots were fired into her home after she published a story on murdered crime figure Martin Cahill. On 30 January 1995, the day after an article on Gerry "The Monk" Hutch, a gunman shot her in the leg at her doorstep; ballistics later linked the weapon to the earlier shooting at her home. On 13 September 1995, John Gilligan physically attacked her when she confronted him about his lifestyle, and he later phoned her to threaten her and her son. Guerin reported this to Gardaí with her barrister Felix McElroy as witness, leading to an assault charge against Gilligan.
On the evening of 25 June 1996, gang members Charles Bowden, Brian Meehan and Peter Mitchell met at Greenmount Industrial Estate, where Bowden loaded a Colt Python revolver. John Gilligan flew to Amsterdam that same day. On the morning of 26 June 1996, Guerin appeared at Naas District Court on a speeding charge. She was placed under covert surveillance by gang member Russell Warren, who relayed her location by phone to Gilligan and Meehan. At around 12:55pm, while she was stopped at a red light on the Naas Dual Carriageway near Newlands Cross, a motorbike pulled alongside her car and a passenger smashed her window and fired six shots, killing her almost instantly.
Guerin's murder caused national outrage in Ireland; Taoiseach John Bruton called it "an attack on democracy." Within a week, the Oireachtas enacted the Proceeds of Crime Act 1996 and the Criminal Assets Bureau Act 1996, leading to the formation of the Criminal Assets Bureau. The assault charge against Gilligan was struck out following Guerin's death, as she was the only witness.
The subsequent investigation led to over 150 arrests and convictions. Bowden turned state's witness in exchange for immunity from prosecution for the murder and testified against gang members at the Special Criminal Court. Patrick "Dutchy" Holland was named by Bowden as the man he supplied the gun to but was never convicted of the murder and denied the accusation until his death in 2009. Paul "Hippo" Ward was convicted in November 1998 as an accomplice for disposing of the murder weapon and motorbike, but this conviction was later overturned on appeal. Brian Meehan was convicted of murdering Guerin on the testimony of Russell Warren and sentenced to life imprisonment; he remains the only person serving a life sentence for the murder. John Gilligan, who had left for Amsterdam the day before the murder, was later extradited to Ireland, tried, and acquitted of Guerin's murder, though he was separately convicted of importing cannabis and sentenced to a lengthy prison term.
Guerin is memorialised with a statue at Dublin Castle, inclusion on the Freedom Forum Journalists Memorial in 1997, and a scholarship at Dublin City University established in 2007.