Police have indicated they may review the investigation into the death of Stephen Dudley, after a coroner's report was released yesterday.
The Auckland teenager died in June 2013, after a pair of brothers he went to school with attacked him.
The coroner's report released yesterday found Stephen had an underlying heart problem, which caused a cardiac arrest induced by the assault.
The two brothers were discharged without conviction and have permanent name suppression.
Waitemata Police District Commander superintendent Tusha Penny said today Stephen's death was thoroughly investigated by police and the prosecution at the time.
But Ms Penny said in light of the coroners findings, police may review the case.
A spokesperson for the Dudley family said the coroner's findings were vindicating but bittersweet, and they were seeking manslaughter charges against the brothers involved in the fight.
The 15-year-old had just finished rugby training when a teammate picked a fight. The teammate's older brother then joined in, laying one hard punch to Stephen's throat and more to his body.
Stephen collapsed on the field and despite CPR attempts by emergency services he died in hospital less than two hours later.
The brothers were charged with manslaughter but the charges were downgraded to assault after there was not enough evidence to connect the assault to the heart attack.
They were then discharged without conviction