A scene examination yesterday was expected to be completed by early evening.
Police said three men - aged 27, 33 and 44 - have each been charged with wounding with intent to cause grievous bodily harm and are due to appear in Kaitaia Court this morning.
Just over a month ago a 92-year-old was attacked at her Kawakawa home.
The two women accused of the violent home invasion - Bella Rina Rudolph, 24, of Kaikohe, and Carrisa Angelique Davis, 40, of Kawakawa - were jointly charged with burglary with a weapon and wounding with intent to cause grievous bodily harm.
The women entered not-guilty pleas and opted for trial by jury when they appeared in the Kaikohe District Court by audio-visual link from Auckland Women's Prison last month.