Porirua police are investigating an assault which left a 30-year-old man hospitalised with head injuries last night.

A confrontation between two groups occurred near the intersection of Bedford street and Northumberland street, Cannons Creek, at approximately 10.45pm.

A number of men stopped in a vehicle near the intersection and attacked at least one person from a neighbouring house.

It is believed that a weapon was used during the attack.

The vehicle has been described as a dark coloured Nissan Skyline. Police believe the vehicle may have had a window broken during the incident.

Detective Sergeant Dave Jones of the Porirua police would like to hear from anyone who witnessed the incident or who can help identify the vehicle and its occupants.