A man has died after being shot following an incident with gardaí in Hartstown, West Dublin.
Gardaí were responding to a public order incident at a business premises.
They said that there had been reports of a man in his late 20s, armed with a knife, at the scene.
Uniformed, unarmed, gardaí responded to the scene and a foot chase ensued.
A statement revealed that the man threatened unarmed gardaí with the knife.
Gardaí said that members of the Armed Support Unit arrived at a scene in Manorfields Drive, Dublin 15.
The Armed Support Unit were also threatened with a knife and “implemented a graduated policing response where the use of less-than-lethal force options was initially administered in an effort to resolve the incident”.
Gardaí said that “the less-than-lethal use of force options were unsuccessful, and a number of shots were discharged from an official Garda firearm at approximately 12.35pm”.
The man was treated at the scene by Armed Support Unit paramedics and Dublin Fire Brigade paramedics.
He was transferred to Connolly Hospital Blanchardstown, where he has pronounced dead this afternoon.
The Garda Síochána Ombudsman Commission (GSOC) have been notified of the incident and are currently in attendance at the scene.
In a statement this afternoon, GSOC said: "GSOC received a referral under s. 102 of the Garda Síochána Act 2005 from the Garda Síochána following an incident this morning in Blanchardstown.
"A male was fatally injured following the discharge of a Garda firearm.
"The referral was made under Section 102 of the Garda Síochána Act 2005, which provides for independent investigation of any matter that appears to indicate that the conduct of a member of the Garda Síochána may have resulted in the death of, or serious harm to, a person.
"GSOC deployed a team of investigators to the scene and an examination of the incident continues.
"GSOC will be making no further comment at this time."
Gardaí said that investigations are ongoing.