Three men have died in what is believed to be a double murder and a suicide at a farm house in County Cork.
The bodies of a father, aged 59, and two sons, in their 20s, were discovered outside Kanturk on Monday afternoon.
The body of one of the sons was found in a bedroom, and the bodies of his brother and father were found on adjoining land after 13:00 local time.
They have been named as Diarmuid O'Sullivan, 22, Mark O'Sullivan, 25, and Tadgh O'Sullivan, 59.
All three men had gunshot wounds.
Post-mortem examinations for two of the men have taken place at Cork University Hospital, where a third examination is expected on Wednesday.
The incident began after a woman, aged in her 60s, alerted neighbours that a firearm had been discharged at her home.
She is believed to be the mother and wife of the victims.
Gardaí said they initiated their critical firearms incident response, with officers at the scene supported by the Armed Support Unit and the Irish ambulance service.
The scene was contained, and a media blackout was put in place. This has since been lifted.
Throughout Monday morning, negotiators attempted to make contact with someone in the house.
After 13:00, members of the emergency response unit approached the house, and the body of a man in his 20s with gunshot wounds was discovered.
No-one else was present in the house.
The Garda Air Support Unit helicopter began an aerial search, and the bodies of the other men were discovered with suspected gunshot wounds.
Gardaí said they are not seeking anyone else in relation to the incident.