Officials are being criticised for their handling of a protest at Ihumātao in Auckland as tensions rise.
People are occupying the site, as they fight a new Fletcher housing development at the historic Māori reserve.
Since Tuesday, police officers have been liaising with local iwi, trying to end the stand-off.
Eviction notices have been issued and four arrests have been made. Pepper spray also had to be used on two large "uncontrolled and aggressive" dogs.
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Police say one person was taken into custody on Wednesday morning, after climbing on a Fletcher Building truck and wedging themselves between a cabin and its tray.
Counties Manukau District Commander Superintendent Jill Rogers said the woman was removed from the truck, and checked by medical staff.
A barricade was formed by police across a paddock on Wednesday after a group of protesters arrived walking through it.
Organise Aotearoa spokesperson Kate McIntyre told Newshub that residents thought only a small number of officers would be present.
"I wasn't expecting 100 officers accompanying Fletcher's spokespeople, to just come in, storm in, and kick everyone out.
"It's completely unacceptable - as far as I know, police have completely breached the trust and the agreement that they had."
Newshub reporter Emma Cropper said the number of protesters was growing on Wednesday.
She said a large group of school children walked down the road singing a waiata late Wednesday morning.
Fletcher Building was contacted for comment by Newshub on Wednesday.
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Spt Rogers said police would remain at the site until the situation was resolved.
In a statement on Tuesday Fletcher said the elders believe the current occupation is creating division and hurt within the iwi.
Fletcher said it was committed to returning more than 25 percent of the land it now owns, to mana whenua.
Demonstrations move to Wellington
Hundreds of protestors have made their way to the Parliament steps in a bid to stop the housing development going ahead.
About 300 people holding banners blocked part of Lambton Quay for a time.
Two protesters reportedly locked themselves to a car.
One woman said in a Twitter post they'd closed the road in solidarity with the protesters in south Auckland.