The Garda ombudsman is investigating after a man who interacted with officers three times in one night died in hospital.

The man died at St Luke’s Hospital in Kilkenny in the early hours of Monday morning.

He first came to Garda attention at around 6:30pm that evening when emergency services were called to a house in the An Grianan housing estate in Killenaule.

The man, who was at the house with a “number of other people,” had suffered a significant injury to his arm and was taken to hospital for treatment.

Gardaí said he left the hospital and was found walking on the M8 Motorway near Junction 6 at 12:30am on Monday.

Officers removed him from the road “for his own safety” and brought him to Chapelfield Estate in Urlingford, County Kilkenny.

They left him there after they observed him "at the front door of a house."

Then, at 1:49am, Gardaí responded to an incident at a house in the estate.

The man was taken to St Luke’s Hospital, where he later died.

Gardaí said the matter was referred to GSOC as a matter of procedure and the ombudsman has launched its own investigation into the circumstances surrounding the death.

Meanwhile, Gardaí said they are not treating the death as sinister but are investigating for the Coroners Court.

Gardaí have launched an appeal for information on the death this morning.

They are particularly interested in talking to anyone who was at the house with the man in the Killenaule.

They also want to hear from anyone who saw the man on the M8 between 12am and 12:45am on Monday morning.

Finally, they would like to talk to anyone who was in the Chapelfield Estate between 1am and 3:30am.