One person has died and another person has been seriously injured after a shooting on the Coromandel Peninsula this afternoon.

Police were called to The 309 Road just after 2pm when two people were located with gunshot wounds.

"Members of the public provided CPR to one person, but sadly they died at the scene a short time later."

St John said it responded with one ambulance, one first responders unit and two helicopters.

"One patient in a serious condition is being airlifted to Auckland City Hospital," a spokesperson said.

Inspector Andrea McBeth said one person has been taken into custody and charges are being considered.

"Police are not seeking anyone else in relation to this incident.

"Inquiries are underway to determine the circumstances leading up to the incident."

The owner of The Waterworks, a theme park and tourist attraction on the remote road, told 1News "several people had been shot" and one had been pronounced dead.

He said about 120 schoolchildren were in the process of leaving the park when the shooting took place, and that he had been serving ice cream when the incident began.

"A guy ran in and said that he'd heard some gunshots, and I immediately just stopped what I was doing, grabbed my first aid kit, and then hightailed it to the back of the property - which is about 150 metres just up the road," he said.

He helped give CPR to a person who had been shot.

"I had a pulse for the first five minutes. And then we continued to provide CPR - there's myself and another guy," he said.

Footage provided to 1News shows a number of emergency service vehicles on scene, including police, fire, and ambulance staff.

Two Westpac Rescue Helicopters were in attendance, with a spokesperson confirming a patient was being airlifted following a "shooting incident" in Waiau.

Thames-Coromandel District Council said in a Facebook post that the 309 Road was closed due to a "developing police incident".

"This may take some time. Please avoid the area if possible and use alternative routes."