THE mother of a teenage boy who died in a deliberately lit fire in the late 90s says her "heart still aches" for the son whose killers have never been bought to justice.
NSW Police have marked the 15th anniversary of 13-year-old Arthur Haines' death by renewing their appeal for information about the blaze that claimed his life.
A $100,000 reward, first offered in 2000, remains current.
Arthur was staying at a friend's house on Walker St, Waterloo, when a fire broke out on the night of April 9, 1998.
He succumbed to his horrific burns 11 weeks later.
Scientific examination of the crime scene determined the house fire was deliberately lit but exhaustive inquiries failed to capture a culprit.
Acting Redfern Local Area Commander, Detective Acting Superintendent Leanne McCusker, said someone in the community must know how the fire started and imagined "living with that secret for the past 15 years has been burdensome".
She said information would help bring those responsible to justice and give the teenager's family much needed closure.
Arthur's mother Julie Sazbo said her families pain had not diminished.
"Fifteen years have passed since we lost Arthur but our hearts still ache for him," she said.
"We are desperate for answers and hope someone might provide police the information they need to catch those who took Arthur from us."
Anyone with information can phone Crime Stoppers on 1800 333 000.
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