Three men have been arrested as part of an investigation into a serious early morning assault in Dublin.

A 40-year-old man suffered stab wounds in the attack in Kimmage at about 2.45am.

The man was discovered outside a house at Ravensdale Park and taken to St James's Hospital.

His injuries are said to be serious, but are not believed to be life-threatening.

Three men in their 40s have been arrested and are currently detained at Crumlin, Sundrive Road and Terenure garda stations.