Three people arrested in connection with the murder investigation into the fatal house fire in Birchwood, Waterford City, have been released without charge.

The three individuals, a man in his 50s and two women in their 30s, were arrested on Tuesday, October 20th, as part of the ongoing investigation.

Gardaí have confirmed that all three have now been released without charge, and a file will be prepared for the Director of Public Prosecutions (DPP).

A fourth person, a man in his 20s who was arrested on Thursday, October 22nd, remains in Garda custody.

The investigation follows a devastating arson attack at a house in the Birchwood area of Waterford City shortly after 5am on Tuesday, October 13th.

Philip and Kim English and their two young sons, Callum (12) and Jayden (9), lost their lives following the fire.

Two other children were critically injured in the incident.

Gardaí say investigations into the multiple murders remain ongoing.

Two other people have previously been charged in connection with the fire and have appeared before the courts.