A mother made an appeal today to find a man who was seen running from her 12-year-old son's outside play den moments before it caught fire, killing the youngster.
Mrs Elizabeth Connors begged the public to help gardaí trace the man who was filmed near Stephen's den in Tallaght a year ago on Sunday.
Mrs Connors told RTE News: "He was robbed of so much. Robbed of a chance of life. He was only 12. Even the inquest has been put off for another year because no one has been found for this.
"It is all dragging and dragging on. Stephen won't rest in peace until this is ended".
Stephen was with a friend when the fire tore through the den near to their homes early on September 1st last year.
At first police thought the boys had knocked over a candle, but CCTV footage from a local business suggested they may have been deliberately attacked.
The film showed a man approaching the carpet and pallet construction with a dog, before leaving and returning alone about nine minutes later carrying an object. He finally ran away at about 5.20 a.m., moments before a small explosion and smoke could be seen.
Stephen died from smoke inhalation in the den, despite efforts to save him by his friend, Darren Hall, who was not injured.
PA