As investigations continue into three separate homicides, anti-violence groups are warning people to be more careful around the holiday period.
The National Network for Stopping Violence Services says the holiday period is a difficult time and people should ask for help if they need it.
Network manager Brian Gardner says there are steps which can be taken to reduce the risks of domestic violence.
He says people should think about budgeting and preparing for situations where there are family pressures and alcohol.
Mr Gardner says the next three months are a dangerous time for some couples as holiday pressures are sometimes like throwing a log on the fire.