Two young children have fallen from a balcony in Sydney's west.

Two young children are reported to have fallen from a balcony in the Sydney suburb of Bankstown just before 9am.

A two-year-old boy and a five-year-old girl were attended to by paramedics after allegedly falling from the third floor – a 10m drop, said The Daily Telegraph. They have both been taken to Westmead Children’s Hospital.

Bankstown: Two children have fallen from a balcony on South Terrace. #sun7 https://t.co/MyDwdZwY6v

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The girl is reportedly in critical condition while the boy remains stable.

The frightening incident occurred at the complex at South Terrace in Bankstown.

More as it comes.