A young girl has been taken to hospital after being hit by a motorbike whose rider allegedly fled the scene without stopping.

Police say the child was walking along Popondetta Road in Dharruk, in western Sydney, at 1.30pm today when the motorcycle hit and injured the girl.

Officers allege a young person on the trail bike continued riding without stopping.

The four-year-old girl was treated at the scene for a cut to her head before she was taken to Westmead Children's Hospital for further treatment.

The child's injuries are not considered life-threatening.

The motorcycle was later found abandoned at a reserve at the rear of Woodstock Avenue and the young person was arrested at a nearby home.

He is currently at Mt Druitt Police Station assisting police with enquiries.

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