An investigation into a police officer who dragged a protester by her hair was prompted by complaints from his fellow officers.
Auckland police investigated the officer involved but won't say what, if any, action was taken.
The officer was caught on camera dragging a woman by her ponytail.
The woman, Olive McRae, was one of thousands protesting against the TPP in Auckland in February.
She was part of a group that sat on a motorway off-ramp as vehicles drove past.
"What you don't expect is to be dragged along the concrete by your hair with somebody who is wielding a baton," Ms McRae says.
"That's quite scary and it is painful."
A number of police staff were so concerned they reported the constable involved to their superiors.
An investigation was launched and found "the officer used unnecessary force which were not approved tactics".
But, "the investigation found the force used was not excessive criminally".
The investigation report said “it looked very bad when caught on camera and for this reason it was a breach of policy but not a criminal matter.”
Police say in the report the officer involved approached Olive McRae twice, telling her to move.
They claim she wouldn't so the officer tried to move her by grabbing her arms but was unsuccessful.
The constable felt they were in a dangerous situation because of passing vehicles - that's when he pulled her hair.
"If any other male dragged a female by the hair across the road and was wearing a mask, I'm sure that they would be done for assault," Ms McRae says.
The so-called mask was a motorbike helmet, as the officer was originally tasked to motorcade duties.
Police won't say what action if any was taken against the constable.
But they did say what actions weren't taken - he wasn't charged with assault or fired from his position, and they expected Ms McRae to be dissatisfied.
They were right.
"I've had no offerings of support whatsoever from the police," Ms McRae says.
Newshub.