Police were justified in shutting down two out-of-control parties in Hamilton, the police watchdog has found.
Multiple complaints were laid about the police's actions after the parties on Wellington St, in Hamilton on January 17.
However, in a report released this morning, the Independent Police Conduct Authority concluded police "took appropriate steps to disperse the crowds of partygoers and were justified in arresting four people".
It also found police were justified in using "reasonable force" to carry out the arrests.
But police were not justified in using force against a woman by pushing her with a shield as she did not pose a genuine risk to police at that time, the authority found.