police have charged two teenagers for allegedly setting off flares during which a 13-year-old boy suffered burns to his leg at around 7.10 .
the 16-year-old boy , from bicton , has been charged with grievous bodily harm and use of signals and flares .
he will appear before the perth children 's court on may 6 .
the incident follows as glory were evicted from competing in the finals series and fined $ 269,000 .