A boy has died in hospital after he was critically hurt falling from an e-bike on Thursday afternoon.

The 14-year-old suffered serious injuries at Arncliffe Park on Broe Ave in the southern Sydney suburb of Arncliffe.

He was treated by paramedics that rushed to the scene about 2.45pm.

The teen was then taken in a critical condition to Sydney Children’s Hospital, where he died.

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NSW Police have roped off the crash site and launched an investigation into the cause of the fatal fall.

A report will be prepared for the coroner, and anyone with information should contract Crime Stoppers.