By Luke Costin in Sydney

A TEENAGER knocked off his e-scooter and down an embankment has died, sparking the arrest of a driver north of Sydney.

Police found the boy dead down a bushy embankment in Warners Bay about midnight on Saturday.

The officers were responding to reports of a crash that occurred about 5.30pm on Friday, police said.

The teenager, who is yet to be identified, was located near the crash scene on Macquarie Road along with his e-scooter.

About an hour later, police arrested a 21-year-old man at a Maryland home and charged him with dangerous driving occasioning death.

He also faces a back-up charge of negligent driving and a charge alleging the incident was a fatal hit and run.

The man was bailed to appear at Belmont Local Court on September 13.

His licence has been suspended.