Four people were found dead on Christmas in Wakefield, New Hampshire from suspected carbon monoxide poisoning, the fire marshal said.

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.

The four individuals found dead inside a New Hampshire home on Christmas Day were identified as a family from Newton, Mass. by officials on Friday. All were suspected to have died from carbon monoxide poisoning.