A teenager has been taken to hospital with serious burns following a brawl in Sydney's southwest.
Emergency services found the 17-year-old after being called to Tahmoor.
He's been airlifted to hospital where it's believed he's in a stable condition.
Another teenager has also been taken to hospital with a suspected broken arm, while a woman has been treated for minor facial injuries.
A man has been arrested along with a youth.
Police are still investigating how the 17-year-old received the burns.