Three people arrested in fatal Waterford fire inquiry released without charge
The man in his 50s, and two women in their 30s, were arrested on Tuesday in the investigation.
Three people arrested in the investigation into a fatal fire in Co Waterford have been released without charge.
Kim and Phillip English, and their sons Callum and Jayden died after a fire in their house in the Birchwood area of Waterford on October 13.
Their funeral took place in Waterford on Monday.
Two other children remain in critical condition as a result of the fire.
Gardaí said a file will be prepared on the three people released and sent for the Direction of Public Prosecutions.
The three people, a man in his 50s, and two women in their 30s, were arrested on Tuesday.
An Garda Síochána said it continues the multiple murder investigation, following an arson attack and fatal house fire, in the Birchwood area of Waterford City October 13.
A fourth person, a man in his 20s arrested on Thursday, remains in Garda custody.