As part of this investigation, gardaí arrested three men, two in their 20s and one in his 30s, on Tuesday.

A file is to be prepared for the coroner.

His sister, Mary, and her grandnephew, four-year-old Tadhg Farrell, died on December 6th following an arson attack on the same house.

Judge Andrew Cody commented: “I left him in custody to sober up.”

Aaron Holt (27) faced sentencing on Tuesday when Judge Keenan Johnson described him as the "main driver of a significant amount of drugs" in his locality.

Gardai said the man arrested on Wednesday was released without charge on Thursday.

Four-year-old Tadhg Farrell and his great-aunt Mary Holt died in a house fire in Castleview Park, Edenderry, on December 6th.

The two males who carried out this fatal arson attack left the scene at Castleview Park, Edenderry, in this Black Kia Rio.

Officers have issued a fresh appeal for information about the fatal fire in County Offaly.

Mrs Holt was killed alongside her great-nephew in a fire attack last weekend.

Hundreds of people lined the street as the hearse carrying the coffin approached the church.

Aaron Holt, 27, described as “front and centre” of Edenderry drugs pecking order amid safety fears if released

Hundreds gathered at a vigil near where four-year-old Tadhg Farrell and his great aunt Mary Holt died on Saturday

Four-year-old Tadhg Farrell and his grand-aunt Mary Holt died on Saturday.

A murder investigation has been launched after the deaths of a woman and a child at a house on Castleview Park in Edenderry.

The victims have been named as four-year-old Tadhg Farrell and Mary Holt, aged 60.

Emergency services arrived at the scene at a domestic residence in Edenderry at around 7.45pm on Saturday.

The collision involving a crane and two vans occurred on the R401 at Drumcooly at approximately 6:15am.

Bretland Construction has today opened its new corporate headquarters in Edenderry, Co Offaly