Te Marae o Hine, The Square in Palmerson North has been cordoned off by police as they investigate an incident which took place in the early hours of Friday morning.
Police told Newshub they received a report of an assault in the Square at about 6:30am.
One person has been taken to hospital to be checked by medical staff.
Enquiries are ongoing to understand the circumstances of the incident and anyone with information is asked to contact the police.