Police are investigating the murder of a 41-year-old man shot dead in Sheung Shui today.

Shortly before 7am, Police received a report that a man was found lying unconscious in a public toilet at the Sheung Shui Centre on Chi Cheong Road.

Officers found a gunshot wound to the back of the victim's head and he was certified dead at the scene.

Two spent cartridges were found nearby, and investigations by the Organised Crime & Triad Bureau are continuing.