A Massachusetts couple and their two daughters were identified

A Massachusetts couple and their two daughters were identified by authorities Friday as the victims of suspected carbon monoxide poisoning after they were found dead at their lake house in New Hampshire on Christmas Day. Matthew Goldstein, 52, was an elementary school teacher in Chestnut Hill and Lyla Goldstein, 54, was a project manager at Microsoft, according to online profiles. Their daughters, Valerie, 22, and Violet, 19, also died in the accident. The family all lived in Newton, Massachusetts, and were visiting New Hampshire over the Christmas holidays. Investigators said they are continuing to inspect the home’s propane gas heating system and suspect there was a carbon monoxide leak, although they haven’t yet determined its cause. New Hampshire’s Office of the Chief Medical Examiner completed an autopsy of Matthew Goldstein and found his cause of death was carbon monoxide poisoning. Autopsies have yet to be completed on the other three victims. New Hampshire Fire Marshal Sean Toomey said there were no carbon monoxide alarms found in the home, and he urged people to install and maintain such alarms.