Detectives have charged a 13-year-old girl following the weekend incident.
A 15-year-old girl was left in hospital with serious facial and spinal injuries following an on-field attack during a weekend football match.
Joondalup Detectives said a 13-year-old girl assaulted the other teenager when they were playing for opposing teams during a girls junior football match in Heathridge on Friday.
The victim was taken to Perth Children's Hospital where she is receiving ongoing treatment.
The 13-year-old from hocking has been charged with grievous bodily harm and is due to appear before the Joondalup Children's Court next month.
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