At least one person has suffered injuries in an incident at in the Auckland suburb of Mt Roskill.
Police and emergency services are at the scene on May Rd.
A spokeswoman confirmed police were called there just after midday.
She said it was thought to be a family harm incident and at least one person had suffered "some injuries".
One person was being spoken to by police, she said.
A witness at the scene said a man could be seen with handcuffs on.
Up to five police vehicles and three ambulances were at the scene, he said.
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