Police say Ian Rutledge, 43, died in hospital after the incident in Maguiresbridge, County Fermanagh
A fourth person has died after a shooting in County Fermanagh in which a mother and two children were killed.
Police said Ian Rutledge, 43, had died in hospital after the incident in Maguiresbridge last Wednesday. Vanessa Whyte, 45, a vet originally from County Clare, her son James, 14, and daughter Sara, 13, died earlier.
A murder investigation was launched last week. Northern Ireland police said a triple murder and attempted suicide was one line of inquiry.
The Police Service of Northern Ireland said on Monday that Rutledge had been in hospital in a serious condition, and had died.
