Investigators say a malfunctioning heating system is to blame for a deadly carbon monoxide leak in Wakefield last month which claimed the lives of a family from Newton Massachusetts. Husband and wife Matthew and Lyla Goldstein and their adult daughters, Valerie and Violet, were found dead inside their vacation home on Province Lake Road on Christmas Day. Officials said the propane gas heating system in the home was not working properly, causing its ventilation system to be damaged.

Fire officials say this is a reminder to make sure routine heating system maintenance is performed and that homes should have working smoke and carbon monoxide detectors.