Sixteen-year-old taken to hospital for treatment

A teenager has been seriously injured after being set upon by a group at South Windsor.

Hawkesbury police were called to Hawkesbury Hospital about 8pm on Monday, September 9, after the 16-year-old boy presented with serious injuries to his hand and shoulder.

"The teenager is undergoing further treatment at the Childrens Hospital at Westmead. His current condition is unknown," police said in a statement.

"It is believed the boy was set upon by a group while he was near netball courts on Mileham Street, South Windsor.

"An unknown person drove the boy to hospital, who police are appealing to identify and speak with."

Anyone with information about the incident or the driver of the vehicle should contact Crime Stoppers on 1800 333 000, or https://nsw.crimestoppers.com.au.

Information is treated in strict confidence.