One man has died and two others have been seriously injured in five separate stabbings in Dublin overnight.

A 19-year-old man who was attending Beaumont Hospital suffered stab injuries in the building.

A 29-year-old has been arrested in connection with this incident and is to appear at Swords district court in the morning.

In Blanchardstown, a man is fighting for his life after being stabbed last night a bonfire in Drumheath.

A post mortem is due shortly on the body of a man who was killed at the Oliver Bond flats in Dublin's north inner city in the early hours of this morning.

The incident occurred shortly before 2.45am.

A man, aged 21, received serious stab wounds to his body.

He was taken to St James's Hospital for treatment, but was later pronounced dead.

A post mortem is expected to take place this afternoon.

Gardaí are appealing witnesses or anyone who may have any information to contact them at Kevin St on 01-666-9400, the Garda Confidential Line on 1800-666-111, or any Garda station.

Separately, a man remains in a critical condition following a stabbing incident at a bonfire in Blanchardstown. 

In a third incident, gardaí are investigating a stabbing in Clare Hall over night.

A man in his 20s was injured in the attack on Temple View Avenue.

Officers had been called to the scene to deal with a public order issue at 1.10am this morning.

The victim was rushed to Beaumont Hospital where he remains in a serious condition.

No arrests have been made and gardaí are asking anyone with information to get in touch with officers at Coolock.

While on Priorswood Road in Dublin 17 a man received non life threatening injuries as a result of being stabbed during a row at about four o'clock this morning.

Gardai are investigating all five incidents and are appealing for witnesses to come forward.