Hato Hone St John said the man was transported to Whangārei Hospital by ambulance in a moderate condition.
Two men, aged 67 and 52, and a 68-year-old woman were jointly charged with wounding with intent to cause grievous bodily harm.
They were due to appear in the Whangārei District Court today.
Brodie Stone covers crime and emergency for the Northern Advocate. She has spent most of her life in Whangārei and is passionate about delving into issues that matter to Northlanders and beyond.