One critically hurt as armed police reportedly swarm on Tuakau south of Auckland

The police Eagle helicopter has reportedly been circling overhead Tuakau. Photo / Dean Purcell

A critically injured person has been rushed to hospital after a reported assault south of Auckland.

Residents in Tuakau and Pōkeno have reported seeing armed police and ambulances swarming the area south of the city while the police Eagle helicopter circled overhead.

A police spokeswoman said police were called to the incident in Tuakau about 4.30pm.

The report first came in as an assault but at this stage police were still investigating what has happened, she said.

One person had presented at a local medical centre in Tuakau with injuries, she said.

"That person has been transported to hospital where they remain in a serious but stable condition," she said.

"Police are speaking with persons at an address, and there is not believed to be any ongoing risk to the public."

Police remain at the scene of the incident making inquiries.

The Westpac Auckland Rescue Helicopter, three ambulances and "two managers" also attended the incident, a St John spokeswoman said.

She confirmed one patient had been taken to hospital in a critical condition.

One Facebook user from the Tuakau and Pōkeno community said police had drawn rifles on Alexandra Redoubt Rd near the Tuakau cemetery and Waikato River.

"The road is closed to the public now," the user said.

They said police wouldn't let them closer to the Waikato River.

"Police do have their rifles drawn. I did ask If we were safe and his response was 'I don't know'," the user wrote on Facebook.

Another user wrote they had driven up Alexandra Redoubt Rd.

"Police have guns drawn at the house. Shocked as that we were actually able to drive on past," the user said.

Other users reported up to five police cars and three ambulances at the scene.

One user hoped the police Eagle helicopter had an eye on their fuel gauge because they had been circling overhead for a long time.

Other users also reported having their doctor's appointments closed at the Tuakau Health Centre due to it helping out with an emergency.

The centre wouldn't comment to the Herald.