Police are investigating the murder of an 18-year-old man in Sheung Shui.

Shortly before 11.30am, a man was found lying unconscious on a cycling track on Pak Wo Road beneath a footbridge linking Yuk Po Court and Tai Ping Estate.

He was rushed to North District Hospital and certified dead at 12.24pm.

Four stab wounds were found on the man's back. A post-mortem will be conducted on December 20.

The case has been taken over by the New Territories North Regional Crime Unit for investigation.