He said there did not seem to be any risk to the wider public.
Invercargill police were appealing for members of the public to get in touch if they had any information relating to the incident.
"Witnesses have reported seeing an older, four-door vehicle leaving the area shortly after the shots were heard, heading in a northerly direction.
"Police are interested in any further sightings of a vehicle fitting this description in the area around 11pm.
"An investigation is also under way into a vehicle fire in the vicinity of Mabel Bush Hall on Mill Rd North at around the same time and police are considering if these two events are related."
Scene examinations are currently underway at both locations.
Anybody with information is urged to contact Invercargill Police and quote file number 201215/9524. Information can also be provided anonymously via Crimestoppers on 0800 555 111.